十二行，轻松解，一看就会

#include<bits/stdc++.h>
using namespace std;
int main(){
int x,y;
cin>>x>>y;
int ji1=4*x-y;
int ji2=4-2;
int ji=ji1 / ji2;
int tu=x-ji;
cout<<ji<<endl<<tu;
return 0;
}