UVA Solutions 10055 – Hashmat the Brave Warrior

#include<bits/stdc++.h>
using namespace std;
int main()
{
    long long int a,b,diff;
    while((scanf("%lld%lld",&a,&b)!=EOF))
    {

        diff=abs(a-b);
        printf("%lld\n",diff);
    }
    return 0;
}

Note: You have to take long long as it is wanted in the description 2^32