#18844. 历史
-
ID: 18844
Type: Default
2000ms
128MiB
Tried: 0
Accepted: 0
Difficulty: (None)
Uploaded By:
历史
说明
输入格式
输出格式
5 3
1 1 1 1 1
1 2
1 3
2 4
2 5
2 1
3 1
4 1
6
7
9
10