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

4 0 1 2 3

3
0
1 -1
0

3 0 1 2

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

4 0 1 2 3

