10071 - Back to High School Physics

PROBLEM: 

A particle has initial velocity and acceleration. If its velocity after certain time is v then what will its displacement be in twice of that time?

Input :

The input will contain two integers in each line. Each line makes one set of input. These two integers denote the value of v (−100 ≤ v ≤ 100) and t (0 ≤ t ≤ 200) (t means at the time the particle gains that velocity)

Output :

For each line of input print a single integer in one line denoting the displacement in double of that time. 

Sample Input :
0 0
5 12

Sample Output :
 0
120

SOLUTIONS :

#include<iostream>
using namespace std;
int main()
{
    int v,t;
    while(cin>>v>>t)
    {
        cout<<2*v*t<<"\n";
    }
    return 0;

}