Day 5
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7980e848e1
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514
5/input
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514
5/input
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[S] [C] [Z]
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[F] [J] [P] [T] [N]
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[G] [H] [G] [Q] [G] [D]
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[V] [V] [D] [G] [F] [D] [V]
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[R] [B] [F] [N] [N] [Q] [L] [S]
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[J] [M] [M] [P] [H] [V] [B] [B] [D]
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[L] [P] [H] [D] [L] [F] [D] [J] [L]
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[D] [T] [V] [M] [J] [N] [F] [M] [G]
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1 2 3 4 5 6 7 8 9
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move 3 from 4 to 6
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move 1 from 5 to 8
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move 3 from 7 to 3
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move 4 from 5 to 7
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move 1 from 7 to 8
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move 3 from 9 to 4
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move 2 from 8 to 2
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move 4 from 4 to 5
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move 2 from 5 to 1
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move 2 from 5 to 6
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move 7 from 8 to 1
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move 9 from 3 to 9
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move 11 from 6 to 5
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move 2 from 6 to 7
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move 12 from 1 to 4
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move 10 from 2 to 9
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move 2 from 3 to 9
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move 1 from 7 to 5
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move 4 from 7 to 6
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move 2 from 6 to 1
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move 5 from 1 to 6
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move 10 from 9 to 1
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move 9 from 9 to 8
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move 13 from 4 to 3
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move 7 from 6 to 2
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move 2 from 8 to 5
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move 9 from 3 to 9
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move 8 from 9 to 8
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move 4 from 8 to 4
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move 1 from 7 to 5
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move 3 from 9 to 1
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move 7 from 2 to 1
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move 1 from 3 to 1
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move 1 from 3 to 6
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move 1 from 6 to 1
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move 2 from 3 to 6
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move 5 from 4 to 1
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move 1 from 6 to 1
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move 3 from 8 to 7
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move 8 from 8 to 4
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move 3 from 5 to 4
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move 1 from 6 to 7
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move 1 from 5 to 8
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move 4 from 5 to 2
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move 7 from 5 to 8
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move 3 from 2 to 7
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move 7 from 4 to 8
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move 11 from 8 to 4
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move 15 from 4 to 1
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move 25 from 1 to 6
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move 4 from 8 to 7
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move 1 from 2 to 4
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move 11 from 6 to 4
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move 12 from 6 to 3
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move 1 from 1 to 9
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move 1 from 9 to 8
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move 16 from 1 to 3
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move 1 from 8 to 7
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move 12 from 4 to 6
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move 9 from 6 to 5
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move 3 from 6 to 5
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move 6 from 7 to 5
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move 3 from 3 to 5
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move 2 from 6 to 3
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move 11 from 5 to 8
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move 2 from 8 to 3
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move 2 from 1 to 4
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move 7 from 3 to 1
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move 2 from 4 to 6
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move 2 from 6 to 2
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move 5 from 7 to 3
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move 1 from 1 to 6
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move 1 from 1 to 8
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move 2 from 2 to 5
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move 1 from 7 to 4
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move 1 from 1 to 2
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move 10 from 3 to 5
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move 11 from 3 to 6
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move 1 from 4 to 9
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move 1 from 9 to 4
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move 1 from 4 to 2
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move 2 from 5 to 9
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move 2 from 2 to 8
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move 2 from 1 to 6
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move 2 from 1 to 2
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move 2 from 3 to 6
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move 3 from 8 to 1
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move 3 from 1 to 4
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move 7 from 8 to 3
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move 2 from 9 to 5
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move 2 from 4 to 9
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move 7 from 5 to 6
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move 2 from 8 to 6
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move 1 from 4 to 8
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move 2 from 2 to 4
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move 21 from 6 to 3
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move 10 from 5 to 7
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move 7 from 7 to 6
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move 1 from 9 to 3
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move 1 from 4 to 9
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move 1 from 9 to 4
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move 1 from 8 to 4
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move 8 from 6 to 4
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move 1 from 4 to 5
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move 1 from 5 to 8
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move 4 from 3 to 6
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move 1 from 8 to 2
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move 1 from 4 to 2
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move 2 from 7 to 3
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move 2 from 2 to 7
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move 22 from 3 to 5
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move 4 from 6 to 2
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move 2 from 6 to 9
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move 7 from 3 to 9
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move 6 from 9 to 1
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move 18 from 5 to 3
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move 2 from 5 to 4
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move 20 from 3 to 5
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move 3 from 7 to 3
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move 5 from 1 to 2
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move 11 from 5 to 7
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move 1 from 1 to 7
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move 3 from 9 to 3
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move 16 from 5 to 8
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move 7 from 8 to 7
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move 1 from 9 to 2
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move 8 from 2 to 3
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move 2 from 2 to 4
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move 3 from 3 to 1
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move 9 from 3 to 8
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move 1 from 6 to 3
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move 9 from 7 to 3
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move 3 from 1 to 8
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move 1 from 7 to 9
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move 1 from 9 to 4
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move 1 from 7 to 5
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move 10 from 4 to 5
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move 2 from 4 to 2
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move 19 from 8 to 5
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move 1 from 8 to 3
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move 4 from 3 to 5
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move 2 from 4 to 8
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move 4 from 7 to 8
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move 4 from 3 to 9
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move 4 from 7 to 6
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move 2 from 2 to 5
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move 2 from 3 to 2
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move 6 from 8 to 7
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move 1 from 8 to 4
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move 2 from 6 to 4
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move 3 from 4 to 8
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move 3 from 9 to 2
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move 4 from 7 to 8
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move 28 from 5 to 8
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move 16 from 8 to 4
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move 11 from 8 to 4
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move 3 from 3 to 4
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move 7 from 5 to 8
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move 13 from 8 to 7
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move 1 from 5 to 6
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move 1 from 6 to 7
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move 1 from 9 to 2
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move 2 from 6 to 2
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move 12 from 4 to 9
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move 4 from 4 to 1
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move 2 from 9 to 8
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move 4 from 8 to 3
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move 3 from 4 to 5
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move 4 from 4 to 1
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move 4 from 4 to 7
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move 3 from 7 to 9
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move 5 from 9 to 7
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move 7 from 2 to 3
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move 1 from 5 to 7
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move 8 from 1 to 5
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move 1 from 2 to 4
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move 11 from 3 to 1
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move 10 from 5 to 3
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move 3 from 9 to 1
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move 3 from 9 to 6
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move 5 from 1 to 6
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move 7 from 6 to 9
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move 8 from 9 to 7
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move 9 from 3 to 4
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move 1 from 6 to 9
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move 8 from 7 to 1
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move 9 from 4 to 2
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move 2 from 1 to 6
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move 3 from 2 to 6
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move 4 from 4 to 6
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move 2 from 9 to 8
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move 2 from 1 to 2
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move 1 from 3 to 8
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move 2 from 8 to 4
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move 1 from 6 to 8
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move 11 from 1 to 6
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move 1 from 1 to 5
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move 3 from 2 to 9
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move 2 from 9 to 3
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move 1 from 1 to 7
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move 2 from 4 to 9
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move 4 from 2 to 9
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move 2 from 8 to 5
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move 10 from 6 to 1
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move 2 from 5 to 6
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move 5 from 9 to 8
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move 5 from 8 to 7
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move 1 from 2 to 1
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move 7 from 1 to 2
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move 2 from 9 to 4
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move 1 from 3 to 5
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move 15 from 7 to 2
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move 8 from 6 to 3
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move 2 from 4 to 3
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move 2 from 6 to 4
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move 4 from 7 to 1
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move 4 from 7 to 5
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move 1 from 6 to 4
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move 3 from 1 to 7
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move 5 from 7 to 6
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move 4 from 7 to 5
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move 18 from 2 to 4
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move 5 from 6 to 4
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move 4 from 1 to 2
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move 8 from 3 to 8
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move 2 from 8 to 4
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move 2 from 3 to 7
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move 1 from 5 to 7
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move 3 from 8 to 4
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move 2 from 7 to 2
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move 1 from 3 to 8
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move 9 from 2 to 6
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move 2 from 8 to 6
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move 1 from 7 to 3
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move 1 from 3 to 5
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move 3 from 6 to 8
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move 1 from 8 to 5
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move 1 from 5 to 9
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move 1 from 1 to 2
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move 5 from 4 to 6
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move 10 from 6 to 2
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move 5 from 2 to 6
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move 5 from 6 to 4
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move 1 from 6 to 3
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move 6 from 4 to 6
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move 3 from 2 to 6
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move 2 from 2 to 3
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move 11 from 4 to 6
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move 1 from 9 to 5
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move 4 from 6 to 7
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move 1 from 4 to 3
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move 12 from 4 to 3
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move 1 from 8 to 6
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move 9 from 5 to 7
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move 1 from 5 to 2
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move 1 from 8 to 5
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move 1 from 4 to 9
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move 9 from 7 to 9
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move 1 from 3 to 4
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move 2 from 3 to 6
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move 2 from 5 to 6
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move 2 from 8 to 5
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move 11 from 3 to 4
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move 2 from 3 to 1
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move 1 from 2 to 3
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move 1 from 3 to 8
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move 3 from 7 to 9
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move 5 from 4 to 2
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move 2 from 5 to 8
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move 6 from 4 to 2
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move 1 from 1 to 3
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move 12 from 9 to 1
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move 6 from 1 to 6
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move 1 from 8 to 4
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move 1 from 8 to 3
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move 5 from 2 to 7
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move 2 from 3 to 9
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move 5 from 7 to 1
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move 1 from 7 to 5
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move 2 from 9 to 1
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move 14 from 1 to 7
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move 2 from 4 to 7
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move 7 from 2 to 4
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move 1 from 2 to 1
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move 1 from 1 to 3
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move 1 from 5 to 4
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move 1 from 9 to 6
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move 16 from 6 to 5
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move 2 from 5 to 4
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move 12 from 6 to 8
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move 10 from 4 to 8
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move 9 from 7 to 3
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move 4 from 7 to 6
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move 11 from 5 to 8
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move 2 from 5 to 2
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move 14 from 8 to 9
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move 1 from 5 to 1
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move 3 from 9 to 4
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move 2 from 2 to 1
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move 7 from 8 to 3
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move 6 from 3 to 5
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move 8 from 9 to 8
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move 1 from 6 to 1
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move 1 from 4 to 2
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move 4 from 3 to 8
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move 1 from 7 to 2
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move 3 from 1 to 5
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move 2 from 5 to 7
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move 3 from 9 to 2
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move 1 from 1 to 8
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move 5 from 5 to 4
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move 2 from 7 to 8
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move 4 from 2 to 5
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move 1 from 2 to 4
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move 2 from 7 to 8
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move 4 from 6 to 2
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move 6 from 5 to 3
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move 1 from 6 to 5
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move 1 from 5 to 3
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move 1 from 3 to 8
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move 8 from 8 to 3
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move 9 from 8 to 5
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move 9 from 8 to 2
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move 2 from 8 to 9
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move 2 from 3 to 8
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move 5 from 5 to 8
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move 1 from 3 to 7
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move 2 from 9 to 5
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move 7 from 2 to 4
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move 14 from 4 to 6
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move 2 from 2 to 7
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move 1 from 7 to 3
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move 1 from 7 to 9
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move 3 from 5 to 2
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move 1 from 7 to 1
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move 3 from 2 to 4
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move 7 from 8 to 2
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move 3 from 6 to 1
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move 17 from 3 to 1
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move 2 from 8 to 3
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move 6 from 2 to 7
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move 2 from 7 to 9
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move 3 from 6 to 8
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move 2 from 8 to 6
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move 4 from 2 to 1
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move 3 from 4 to 7
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move 1 from 8 to 7
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move 1 from 8 to 9
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move 1 from 4 to 2
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move 3 from 5 to 7
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move 2 from 3 to 1
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move 2 from 3 to 5
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move 5 from 7 to 4
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move 5 from 7 to 3
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move 1 from 4 to 8
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move 3 from 3 to 1
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move 6 from 1 to 3
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move 1 from 7 to 5
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move 2 from 9 to 2
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move 3 from 5 to 8
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move 1 from 8 to 1
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move 8 from 3 to 5
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move 1 from 4 to 9
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move 3 from 6 to 5
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move 3 from 6 to 3
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move 2 from 3 to 7
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move 1 from 4 to 7
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move 3 from 6 to 4
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move 2 from 7 to 2
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move 1 from 7 to 8
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move 2 from 5 to 4
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move 1 from 6 to 1
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move 7 from 4 to 7
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move 7 from 5 to 2
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move 10 from 2 to 3
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move 3 from 2 to 6
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move 3 from 8 to 1
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move 1 from 8 to 7
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move 2 from 6 to 3
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move 1 from 6 to 9
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move 4 from 7 to 5
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move 16 from 1 to 5
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move 1 from 9 to 7
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move 3 from 7 to 6
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move 11 from 5 to 6
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move 2 from 7 to 9
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move 12 from 6 to 4
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move 2 from 6 to 9
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move 6 from 3 to 2
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move 1 from 5 to 7
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move 5 from 9 to 5
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move 1 from 9 to 6
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move 4 from 3 to 7
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move 1 from 4 to 2
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move 7 from 2 to 5
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move 3 from 5 to 2
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move 6 from 5 to 6
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move 3 from 2 to 6
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move 9 from 6 to 8
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move 5 from 5 to 9
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move 5 from 7 to 1
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move 4 from 1 to 9
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move 2 from 9 to 4
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move 1 from 6 to 7
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move 9 from 4 to 1
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move 7 from 5 to 9
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move 18 from 1 to 3
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move 9 from 9 to 5
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move 8 from 8 to 2
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move 1 from 2 to 5
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|
move 4 from 2 to 3
|
||||||
|
move 4 from 9 to 6
|
||||||
|
move 1 from 4 to 8
|
||||||
|
move 2 from 5 to 7
|
||||||
|
move 2 from 9 to 2
|
||||||
|
move 10 from 3 to 9
|
||||||
|
move 5 from 5 to 9
|
||||||
|
move 1 from 7 to 2
|
||||||
|
move 2 from 8 to 7
|
||||||
|
move 2 from 3 to 5
|
||||||
|
move 2 from 9 to 1
|
||||||
|
move 2 from 7 to 3
|
||||||
|
move 1 from 2 to 1
|
||||||
|
move 5 from 5 to 8
|
||||||
|
move 1 from 2 to 1
|
||||||
|
move 15 from 3 to 6
|
||||||
|
move 1 from 7 to 6
|
||||||
|
move 10 from 6 to 5
|
||||||
|
move 1 from 7 to 8
|
||||||
|
move 4 from 1 to 6
|
||||||
|
move 1 from 8 to 3
|
||||||
|
move 2 from 1 to 5
|
||||||
|
move 3 from 8 to 1
|
||||||
|
move 1 from 4 to 6
|
||||||
|
move 1 from 4 to 2
|
||||||
|
move 4 from 9 to 7
|
||||||
|
move 6 from 5 to 7
|
||||||
|
move 3 from 1 to 9
|
||||||
|
move 10 from 6 to 8
|
||||||
|
move 2 from 1 to 3
|
||||||
|
move 8 from 7 to 9
|
||||||
|
move 1 from 9 to 6
|
||||||
|
move 2 from 7 to 9
|
||||||
|
move 3 from 3 to 5
|
||||||
|
move 1 from 2 to 6
|
||||||
|
move 2 from 6 to 5
|
||||||
|
move 5 from 9 to 4
|
||||||
|
move 4 from 8 to 2
|
||||||
|
move 1 from 1 to 3
|
||||||
|
move 4 from 5 to 9
|
||||||
|
move 3 from 6 to 1
|
||||||
|
move 2 from 1 to 5
|
||||||
|
move 3 from 5 to 2
|
||||||
|
move 8 from 8 to 3
|
||||||
|
move 11 from 9 to 4
|
||||||
|
move 13 from 4 to 8
|
||||||
|
move 2 from 9 to 2
|
||||||
|
move 2 from 3 to 1
|
||||||
|
move 1 from 4 to 1
|
||||||
|
move 1 from 3 to 8
|
||||||
|
move 2 from 6 to 9
|
||||||
|
move 7 from 8 to 1
|
||||||
|
move 3 from 2 to 5
|
||||||
|
move 7 from 2 to 5
|
||||||
|
move 3 from 4 to 6
|
||||||
|
move 4 from 9 to 2
|
||||||
|
move 2 from 3 to 5
|
||||||
|
move 9 from 5 to 6
|
||||||
|
move 5 from 2 to 7
|
||||||
|
move 2 from 9 to 2
|
||||||
|
move 2 from 9 to 7
|
||||||
|
move 12 from 6 to 8
|
||||||
|
move 5 from 5 to 7
|
||||||
|
move 1 from 9 to 8
|
||||||
|
move 3 from 1 to 6
|
||||||
|
move 5 from 5 to 8
|
||||||
|
move 6 from 1 to 9
|
||||||
|
move 2 from 1 to 5
|
||||||
|
move 1 from 6 to 9
|
||||||
|
move 5 from 9 to 7
|
||||||
|
move 2 from 5 to 8
|
||||||
|
move 11 from 7 to 6
|
||||||
|
move 20 from 8 to 1
|
||||||
|
move 2 from 9 to 8
|
||||||
|
move 4 from 7 to 6
|
||||||
|
move 6 from 8 to 3
|
||||||
|
move 13 from 6 to 9
|
||||||
|
move 4 from 3 to 2
|
||||||
|
move 4 from 6 to 3
|
||||||
|
move 2 from 3 to 6
|
||||||
|
move 5 from 9 to 8
|
||||||
|
move 2 from 7 to 1
|
||||||
|
move 2 from 6 to 9
|
||||||
|
move 6 from 8 to 3
|
||||||
|
move 6 from 3 to 6
|
||||||
|
move 5 from 2 to 9
|
||||||
|
move 22 from 1 to 3
|
||||||
|
move 3 from 2 to 1
|
||||||
|
move 5 from 9 to 3
|
||||||
|
move 1 from 1 to 6
|
||||||
|
move 3 from 6 to 2
|
||||||
|
move 1 from 2 to 4
|
||||||
|
move 33 from 3 to 5
|
||||||
|
move 1 from 8 to 7
|
154
5/solution.mjs
Normal file
154
5/solution.mjs
Normal file
@ -0,0 +1,154 @@
|
|||||||
|
import { readFileSync } from 'node:fs';
|
||||||
|
|
||||||
|
const input = readFileSync('input', 'utf-8');
|
||||||
|
|
||||||
|
const [stackInput, movementInput] = input.split('\n\n', 2);
|
||||||
|
|
||||||
|
// Parse movements
|
||||||
|
const movements = movementInput
|
||||||
|
.split('\n')
|
||||||
|
.filter(movement => movement)
|
||||||
|
.map(movement => {
|
||||||
|
const match = movement.match(/move (\d+) from (\d+) to (\d+)/);
|
||||||
|
if (!match) {
|
||||||
|
throw new Error(`Invalid movement: ${movement}`);
|
||||||
|
}
|
||||||
|
return {
|
||||||
|
count: parseInt(match[1]),
|
||||||
|
from: parseInt(match[2]),
|
||||||
|
to: parseInt(match[3])
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
// Parse stacks
|
||||||
|
const stackInputLines = stackInput.split('\n');
|
||||||
|
const columnDelimiter = ' ';
|
||||||
|
const columnPositions = stackInputLines
|
||||||
|
// Locate delimiter positions
|
||||||
|
.map(line => {
|
||||||
|
const positions = [];
|
||||||
|
let pos = -1;
|
||||||
|
while (true) {
|
||||||
|
pos = line.indexOf(columnDelimiter, pos + 1);
|
||||||
|
if (pos === -1) {
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
positions.push(pos);
|
||||||
|
}
|
||||||
|
|
||||||
|
return positions;
|
||||||
|
})
|
||||||
|
.reduce((commonPositions, positions) =>
|
||||||
|
commonPositions.filter(
|
||||||
|
pos => positions.includes(pos)
|
||||||
|
)
|
||||||
|
);
|
||||||
|
|
||||||
|
const columns = new Array(columnPositions.length + 1)
|
||||||
|
.fill(0)
|
||||||
|
.map(column => []);
|
||||||
|
|
||||||
|
for (const line of [...stackInputLines].reverse()) {
|
||||||
|
for (let i = 0; i <= columnPositions.length; i++) {
|
||||||
|
const start = (columnPositions[i - 1] ?? -1) + 1;
|
||||||
|
const end = columnPositions[i] ?? line.length;
|
||||||
|
const value = line.slice(start, end);
|
||||||
|
columns[i].push(value);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
class Stack {
|
||||||
|
constructor(number, crates) {
|
||||||
|
this.number = number;
|
||||||
|
this.crates = crates;
|
||||||
|
}
|
||||||
|
|
||||||
|
get topCrate() {
|
||||||
|
return this.crates[this.crates.length - 1];
|
||||||
|
}
|
||||||
|
|
||||||
|
move(count, toStack) {
|
||||||
|
this._checkMoveCount(count);
|
||||||
|
toStack.crates.push(...this.crates.splice(-count));
|
||||||
|
}
|
||||||
|
|
||||||
|
moveIndividually(count, toStack) {
|
||||||
|
this._checkMoveCount(count);
|
||||||
|
toStack.crates.push(...this.crates.splice(-count).reverse());
|
||||||
|
}
|
||||||
|
|
||||||
|
_checkMoveCount(count) {
|
||||||
|
if (count > this.crates.length) {
|
||||||
|
throw new Error(
|
||||||
|
`Tried to move ${count} crates from a stack containing: ` +
|
||||||
|
`${this.crates.length}`
|
||||||
|
);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
function buildStacks() {
|
||||||
|
return new Map(columns
|
||||||
|
.map(column => column
|
||||||
|
.map(cell => cell.trim())
|
||||||
|
.filter(cell => cell)
|
||||||
|
)
|
||||||
|
.map(column => {
|
||||||
|
if (column.length < 1) {
|
||||||
|
throw new Error('Invalid column');
|
||||||
|
}
|
||||||
|
|
||||||
|
const number = parseInt(column[0]);
|
||||||
|
if (isNaN(number)) {
|
||||||
|
throw new Error(`Invalid column number: ${number}`);
|
||||||
|
}
|
||||||
|
|
||||||
|
const crates = column
|
||||||
|
.slice(1)
|
||||||
|
.map(crate => crate.replaceAll(/\[?\]?/g, ''));
|
||||||
|
|
||||||
|
return new Stack(number, crates);
|
||||||
|
})
|
||||||
|
.map(stack => [stack.number, stack])
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
function getTopCrates(stacks) {
|
||||||
|
return [...stacks.keys()]
|
||||||
|
.sort()
|
||||||
|
.map(number => stacks.get(number).topCrate)
|
||||||
|
.reduce((crates, crate) => crates + crate);
|
||||||
|
}
|
||||||
|
|
||||||
|
function runSimulation(simulationCb) {
|
||||||
|
for (const movement of movements) {
|
||||||
|
const fromStack = stacks.get(movement.from);
|
||||||
|
if (!fromStack) {
|
||||||
|
throw new Error(`Tried to move from unknown stack: ${movement.from}`);
|
||||||
|
}
|
||||||
|
const toStack = stacks.get(movement.to);
|
||||||
|
if (!toStack) {
|
||||||
|
throw new Error(`Tried to move to unknown stack: ${movement.to}`);
|
||||||
|
}
|
||||||
|
simulationCb(movement.count, fromStack, toStack);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
let stacks;
|
||||||
|
let topCrates;
|
||||||
|
|
||||||
|
// CrateMover 9000 Simulation
|
||||||
|
stacks = buildStacks();
|
||||||
|
runSimulation((count, fromStack, toStack) =>
|
||||||
|
fromStack.moveIndividually(count, toStack)
|
||||||
|
);
|
||||||
|
topCrates = getTopCrates(stacks);
|
||||||
|
console.log(`Top crates after CrateMover 9000 sort: ${topCrates}`);
|
||||||
|
|
||||||
|
// CrateMover 9001 Simulation
|
||||||
|
stacks = buildStacks();
|
||||||
|
runSimulation((count, fromStack, toStack) =>
|
||||||
|
fromStack.move(count, toStack)
|
||||||
|
);
|
||||||
|
topCrates = getTopCrates(stacks);
|
||||||
|
console.log(`Top crates after CrateMover 9001 sort: ${topCrates}`);
|
Loading…
Reference in New Issue
Block a user