제출 #102381

2 2
1 2 -1
1 2 -2

-1

-2

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

-29999
1

-1

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

3
7

3
3