2
-1 2 1 4
0 0 0 2
2
0/1 0/1 0/1 2/1
-1/1 2/1 1/1 4/1
4
-1/1 2/1
0/1 0/1
0/1 2/1
1/1 4/1
0
1
2
0/1 0/1 0/1 2/1
-1/1 2/1 1/1 4/1
