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

0

6
5
1

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

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