제출 #186312

4 5
4 1 5
3 2 2
2 1 0
2 4 5
3 4 0

5

2

5 6
2 3 0
3 5 0
4 1 0
5 1 7
1 2 9
4 5 0

7

0

6 11
6 5 0
3 5 0
2 6 0
4 1 0
2 5 0
5 1 0
4 6 3
3 1 0
3 6 1
3 4 0
4 5 3

1

0