电话:9 32
1 2 3 0 -1 -2 -3 0
1 3 4 0 -1 -3 -4 0
1 4 5 0 -1 -4 -5 0
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1 5 6 0 -1 -5 -6 0
2 4 6 0 -2 -4 -6 0
1 6 7 0-1-6-7 0
2 5 7 0 -2 -5 -7 0
3 4 7 0 -3 -4 -7 0
1 7 8 0 -1 -7 -8 0
2 6 8 0 -2 -6 -8 0
3 5 8 0-3-5-8 0
1 8 9 0 -1 -8 -9 0
2 7 9 0 -2 -7 -9 0
3 6 9 0 -3 -6 -9 0
4 5 9 0 -4 -5 -9 0
1 4 0
1 0
4 0
0