Square painting first testcase not passed

[amitrao]

code-https://ide.codingblocks.com/s/218325
what is the error in the code?

[aa1 (Abha Agrawal)]

@amitrao
try to debug your code for
7 3
WWWWWWW
BWWWWWB
WWWWBWW
WBBBWWB
BBWWBBB
WBBWWWW
BWBBBWB

ans : 3