F - Tree Patrolling
题目描述
输入格式
As shown in the pdf.
输出格式
As shown in the pdf.
样例
3
1 3
1 2
1
0
2
5
5
1 3
4 5
1 5
2 3
1
0
2
5
7
17
10
6 10
1 8
2 7
5 6
3 8
3 4
7 10
4 9
2 8
1
0
3
8
15
32
68
110
196
266
325