case 1 failed: expected:
20
3 1 1 2
3 1 2 2
3 1 3 2
3 1 4 2
3 2 1 2
3 2 2 2
3 2 3 2
3 2 4 2
1 1 2 2
1 1 3 2
1 1 4 2
1 2 2 2
1 2 3 2
1 2 4 2
2 1 2 1
2 2 2 1
2 3 2 1
2 1 3 2
2 2 3 2
2 3 3 2
got:
0
input:
2 2 2
2 2
2 2
exit status 1