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