ACM 10055 -- Hashmat the Brave Warrior

#include <stdio.h>


int main()
{
    long long int hash, oppen;
    while (scanf("%lld %lld",&hash, &oppen)!= EOF){
        if(hash > oppen)
            printf("%lld\n", (hash - oppen));
        else
            printf("%lld\n", (oppen - hash));
    }
    return 0;
}