problem no 1071

[yasin_air]

Hi i am new in online judge. so that i cant able to understand the process . i am trying to solve and submit problem no 10071.volume C or III,problem 10071. address http://uva.onlinejudge.org/index.php?op ... ategory=12.

my code is
#include<stdio.h>
#include<stdlib.h>
main()
{

int v,t;
scanf("%d %d",&v,&t);
long int s;
s=abs(v*t*2);
printf("%ld",s);
return 0;
}
i also try it with several other ways.please help me as soon as possible.