10071 - Back to High School Physics

Author: Ismail Hosen

Daffodil International University

Problem Link

//Please follow from main function

#include<bits/stdc++.h>

using namespace std;

typedef long long ll;

#define scl(x)              scanf("%lld", &x)

#define scll(x, y)          scanf("%lld %lld", &x, &y)

int main()

{

    ll a, b;

    while(scll(a,b)==2){

        cout<<a*b*2<<endl;

    }

    return 0;

}