Squares in a Matrix

PROBLEM :

Given a MxN matrix, count the number of squares in the matrix.

Input:
The first line of input contains an integer T denoting the no of test cases. Then T test cases follow. Each test case contains two space seperated integers M and N, denoting the size of the Matrix.

Output:
For each test output a single integer denoting the total number of squares.

Constraints:
1<=T<=102
1<=M,N<=10^4

Example:
Input:
2
2 2
4 3

Output:
5
20

--------------------------------------------------------------------------------
SIMPLE c++ IMPLEMENTATION :
--------------------------------------------------------------------------------

#include<iostream>
using namespace std;
int main()
{
int t ;
cin>>t ;
while(t--){
   int r,c ;
   cin>>r>>c ;
 
   long long num=0 ;
   while(r&&c){
       num+=r*c ;
       r-- ;
       c-- ;
   }
   cout<<num<<endl ;
}
return 0;
}

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