a012: 10055 - Hashmat the Brave Warrior FYI: https://yunlinsong.blogspot.com/2015/06/10055-hashmat-brave-warrior.html

a012.cpp

#include <iostream>

using namespace std;

int main()
{
    long long int a, b, d;
    while( cin >> a >> b )
    {
        d = a - b;
        if( d < 0 )
            d = -d;

        cout << d <<endl;
    }

    return 0;
}