5  3
-1  1  0
2
1  1
3  1
0
0
0
0
33
0
0
0
0
0
33
0
0
0
0
0
0
0
0
33
0
0
0
0
0
33
0
0
0
0
5
3
8
2
0
2
2
0
2
2
0
2
6
3
7
