case 6 failed: expected "1\n..*..*.\n***....\n.**.*..\n******.\n.*.***.\n.****.*" got "1\n..*..*.\n***....\n.**.*..\n******.\n.***.*.\n.****.*"
input:
6 7 1
..*..*.
***....
.**.*..
******.
.*.*.*.
.****.*