测试点太水了

题解的 暴力出奇迹NB 被hack了，还有其他的hack...

这里给个样例可以hack题解里的代码

30 30 3 7
1 0 1 1 1 0 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1
1 1 1 1 1 2 2 2 2 0 1 1 1 1 1 1 1 1 1 2 1 1 1 1 0 1 1 1 1 1
2 1 1 1 1 1 1 1 1 1 1 1 1 0 2 1 1 1 1 1 1 2 0 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 2 1 1 1 1 1 0 1
1 1 1 1 1 1 2 1 2 0 1 1 1 1 1 0 1 1 2 1 1 1 1 1 1 1 1 1 1 1
2 3 1 1 1 1 1 1 1 1 2 1 1 1 0 1 1 0 1 1 1 1 0 1 1 1 1 1 1 1
1 1 1 1 1 0 2 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 0 0 1 1
1 1 1 1 1 1 1 2 1 1 1 1 0 1 1 2 1 1 1 1 1 0 0 1 1 1 1 2 1 1
1 1 1 0 1 1 1 0 1 1 1 1 2 1 1 0 1 1 2 1 0 1 1 1 1 1 1 1 1 1
1 2 0 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1 0 1 1 1 1 1 1
1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 2 1 0 1 1 2 1 1 2 1 2 1
1 1 0 1 2 1 1 1 1 1 0 1 2 1 1 1 2 1 1 1 1 2 0 1 1 2 1 1 1 0
1 0 1 1 1 1 1 1 1 1 1 0 1 1 0 1 1 1 1 0 1 1 0 1 1 1 0 1 1 1
1 1 1 1 1 1 1 1 0 1 1 1 2 1 0 2 1 1 1 1 1 0 1 1 1 1 1 1 1 1
2 1 1 1 1 1 1 1 1 1 1 1 1 2 0 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1
1 2 1 0 0 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 0 2 2 1 1 1 1 1 1 1 1 1 1 2 0 2 1 1 1 2
1 1 2 1 1 1 1 1 1 1 2 1 1 1 0 0 2 1 1 1 1 2 1 1 1 1 1 1 4 1
1 0 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 2 1 1 0 0 1 1 1 1 1 1 1
2 1 2 1 0 1 1 1 1 0 1 2 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 2
1 1 1 2 1 1 1 1 1 0 0 1 1 1 1 2 1 1 1 1 1 2 1 1 0 1 1 0 1 1
1 1 1 0 2 1 1 1 1 1 2 1 1 1 1 0 1 1 2 1 1 0 1 1 1 1 1 1 0 1
1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1 1 1
1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1
1 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 0 1 0 1 1 1 0 1 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1 1
1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 2 2 1 0 1 1 1 1 1 1 1 1
1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 1 1 1 1
1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1

正解是 9