#BZOJ2834. 回家的路
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ID: 26197
Type: Default
1000ms
256MiB
Tried: 0
Accepted: 0
Difficulty: (None)
Uploaded By:
Hydro
回家的路
题目描述
输入格式
输出格式
2 1
1 2
1 1 2 2
5
f提示 N<=20000,M<=100000