UVa 10055 Hashmat the Brave Warrior

被加入UVa社團，所以寫寫摟

#include <iostream>
using namespace std;

int main()
{
   long x = 0,y =0;
     while(cin>>x>>y){
        if(x>y){
          cout <<x-y<<endl;
        }else{
          cout <<y-x<<endl;
        }
      }
     return 0;
}

http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=996