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B.cpp
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B.cpp
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#include<bits/stdc++.h>
using namespace std;
#define fastio ios::sync_with_stdio(0);cin.tie(0)
int main()
{
fastio;
long long t,n,i,j,cnt,cur;
char ara[15][15];
cin>>t;
while(t--)
{
cur=0;
cin>>n;
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
cin>>ara[i][j];
}
for(i=0;i<n;i++)
{
if(i==0)
{
for(j=0;j<n;j++)
{
if(ara[i][j]=='1')
cur++;
}
}
else
{
cnt=cur;
cur=0;
for(j=0;j<n;j++)
{
if(ara[i][j]=='1')
cur++;
}
if(cnt>0)
{
if(cur==cnt)
cout<<"SQUARE\n";
else
cout<<"TRIANGLE\n";
break;
}
}
}
}
return 0;
}