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**Problem :-**You are given a positive integer N and you have to find the number of non negative integral solutions to

**a + b + c = N**.

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**Solution :-**

#include <iostream>

using namespace std;

int main()

{

int t;

cin>>t;

while(t--)

{

int n,n1,n2,i;

cin>>n;

n1=n+2;

n2=(n1*(n1-1))/2;

cout<<n2<<endl;

}

return 0;

}

**Output:-**

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