#BZOJ1907. 树的路径覆盖
-
ID: 4116
Type: RemoteJudge
1000ms
256MiB
Tried: 0
Accepted: 0
Difficulty: (None)
Uploaded By:
root
树的路径覆盖
题目描述
输入格式
输出格式
1
7
1 2
2 3
2 4
4 6
5 6
6 7
3
数据范围与约定
，注意此注释有误，第二种情况应该为{1,2,4,5,6},{3},{7}