#BZOJ3197. assassin
assassin
题目描述

输入格式

输出格式

4
1 2
2 3
3 4
0 0 1 1
1 0 0 0
1
数据范围与约定




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

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