What can it be?(tests or ideas, something pls)

passes

3
0 1 1
1 2 0
1
1 2

ans:
0

but still WA


Edited by author 20.04.2021 00:52

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