#include <algorithm>
#include <iostream>
#include <sstream>
#include <cstring>
#include <cstdlib>
#include <string>
#include <vector>
#include <cstdio>
#include <cmath>
#include <queue>
#include <stack>
#include <map>
#include <set>
using namespace std;
#define INF 0x3f3f3f3
const int MAXN=10+2e5;

int main()
{
    int t,x,y;
    cin>>t;
    while (t--) {
        cin>>x>>y;
        int b=y+x;
        cout<<2*(b-x)*x<<endl;
    }
    return 0;
}