Question

IRISU UCLIONS
Constraints
1<= N <= 500
Output Format
Print the length of the largest helicopter that can land in the city else print -1 if input is invalid.
Sample TestCase 1
Input
LLLLLLL
x#o#0#o#x#o
x#o#o#o#x#x
x#o#o#o#x#x
X#o#x## #X
x#o#x#o #0#X
EL
LLLLL
LE
LE
Output​

Answer 1

Answer:

I don't know the answer but I will help you next time