Codeforces 1333A - Little Artem Solution
///La ilaha illellahu muhammadur rasulullah
///******Bismillahir-Rahmanir-Rahim******///
///Abul Hasnat Tonmoy
///Department of CSE,23rd batch
///Islamic University,Bangladesh
#include <bits/stdc++.h>
using namespace std;
int main()
{
int t,n,m,i,j;
cin>>t;
while(t--)
{
cin>>n>>m;
for(i=0; i<n; i++)
{
for(j=0; j<m; j++)
{
if(i==0&&j==0)
cout<<"W";
else
cout<<"B";
}
cout<<endl;
}
}
}
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