UVA 10055 -Hashmat the Brave Warrior

#include<iostream>#include<cstdio>#include<cmath>using namespace std;typedef  long long ll;int main(){   ll  a,b;    while(cin>>a>>b)    {        if(a-b>=0)                       cout<<a-b<<endl;        else            cout<<b-a<<endl;    }    return 0;}