Solve.
1 1
1 1
1 1
1 1
1 1
1
1 1
1 1
5
1
1 1
1 1
1 1
5
0
0
0
5 2
1 1 2 1
1 2 1
1 2 1
1 1 2
1 1
1 1
1 1
1 1
0
0
Return?
