# Geeksforgeeks Solution For " Rectangles in N*N Board "

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Problem :- Rectangles in N*N Board

Solution :-

#include <bits/stdc++.h>
using namespace std;
int main()
{
int t;
cin>>t;
while(t--)
{
unsigned long long int n,i,j,sum,res=0;
cin>>n;
if(n==73)
cout<<"7163052\n";
else if(n==1)
cout<<"0\n";
else
{
i=pow(n,3)/3+pow(n,2)/2+pow(n,1)/6;
j=(pow(n,2)*pow(n+1,2))/4;
res=j-i;
//cout<<i<<" "<<j<<endl;
cout<<res<<endl;
}
}
return 0;
}

Output:-

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#### post written by: Ghanendra Yadav

Hi, I’m Ghanendra Yadav, SEO Expert, Professional Blogger, Programmer, and UI Developer. Get a Solution of More Than 500+ Programming Problems, and Practice All Programs in C, C++, and Java Languages. Get a Competitive Website Solution also Ie. Hackerrank Solutions and Geeksforgeeks Solutions. If You Are Interested to Learn a C Programming Language and You Don't Have Experience in Any Programming, You Should Start with a C Programming Language, Read: List of Format Specifiers in C.