case 1 failed: runtime error: exit status 2
panic: runtime error: index out of range [1] with length 1

goroutine 1 [running]:
main.main()
	/tmp/build-219668688/solution.go:29 +0x1424

input:
5 6 0 0
......
......
..*..F
.*....
...*..
exit status 1