#include<iostream>
using namespace std;

int main(){
    int a,b,c;
    while(cin>>a>>b){
                     c=a-b;
                     if(c>0)
                     cout<<c<<endl;
                     if(c<0)
                     cout<<-1*c<<endl;
                     if(c=0)
                     cout<<c<<endl;
                    
                              }
     system("pause");
     return 0;
     }                                        

怪怪的~

自己測試的時候都OK阿

可是我只通過三個測資點><

大感恩!

原來我漏掉了這兩個東西

感謝你的幫忙：)