UVa Solution

10071

#include<stdio.h>
int main(){
    int v, t, s = 0;
    while( scanf("%d %d", &v, &t) != EOF ){
        s = v * (2 * t);
        printf("%d\n", s);
    }
    return 0;
}

/*
velocity = displacement/time

displacement = velocity * (2 * time)
*/
/*
0  0
5  12

*/