16
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8 0 0 0 0 5 0 0 0 0 1 0 0 0 0 15
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10 9 0 0 5 0 0 0 0 0 0 2 0 0 3 8
0 0 7 14 0 1 8 0 0 16 4 0 13 6 0 0
0 0 0 4 0 15 0 3 11 0 10 0 1 0 0 0
2 0 16 1 0 0 13 0 0 9 0 0 11 10 0 4
11 0 0 0 0 10 0 0 0 0 8 0 0 0 0 3
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