说两点，首先，顶点序号可能不连续，第二，注意每组数据后要输出一个换行，且前面还要输出两个空格。

数据如下
1 2
5 4
3 1
3 2
3 4
3 5
0

1 2
2 3
3 4
4 5
5 1
0

1 2
2 3
3 4
4 6
6 3
2 5
5 1
0

1 2
0

1000 999
999 998
998 997
997 1000
0

1 2
2 3
0

1 2
1 3
1 4
1 5
0

1 2
1 3
1 4
2 3
2 5
2 6
3 7
3 8
7 8
0

1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5
4 5
0

0

Network #1
  SPF node 3 leaves 2 subnets

Network #2
  No SPF nodes

Network #3
  SPF node 2 leaves 2 subnets
  SPF node 3 leaves 2 subnets

Network #4
  No SPF nodes

Network #5
  No SPF nodes

Network #6
  SPF node 2 leaves 2 subnets

Network #7
  SPF node 1 leaves 4 subnets

Network #8
  SPF node 1 leaves 2 subnets
  SPF node 2 leaves 3 subnets
  SPF node 3 leaves 2 subnets

Network #9
  No SPF nodes

• Re:全部测试数据 (1003) godbeen 2011-07-27 21:33:25
• THX (12) changmu 2014-08-26 10:37:08
• Re:全部测试数据 (1024) xcw0754 2015-07-02 13:35:46