family1.in

PASCAL光盘资料PASCAL光盘资料PASCAL光盘资料

10 8
3 1 2
4 1 3
5 1 4
6 1 5
7 1 6
8 1 7
9 1 8
10 1 9
10
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
2 5
6 8