//By SCJ
#include<iostream>
#include<cmath>
using namespace std;
#define int long long
main()
{
ios::sync_with_stdio(0);
cin.tie(0);
    int T;cin>>T;
    while(T--)
    {
        int x,y;cin>>x>>y;
        cout<<2*x*y<<'\n';
        /*
        for(int i=1;;++i)
        {
            if(-x+i==y)
            {
                cout<<sqrt( ((i-x)*(i-x)+(y)*y)*( (i-y)*(i-y)+x*x ) )<<'\n';
                break;
            }
        }
        */
    }
}