UVA_10055_Hashmat_The_Brave_Warrior

#include <iostream>
#include <cstdio>
#include <stdio.h>
#include <algorithm>
#include <cstring>
#include <cctype>
#include <sstream>
#include <stdlib.h>
#include <cmath>
#define LL unsigned long long
using namespace std;
int main() {
    long dif,a,b;

    while(scanf("%ld %ld",&a,&b)!=EOF){
       dif=abs(a-b);
       printf("%ld\n",dif);
    }
    return 0;
}