答案： #include <iostream> using namespace std; int main() { int x,y; cin >> x >> y; for(int i = 1; i <= y/2; i++) { for(int j = 1; j <= y/4; j++) { if(i + j == x && i * 2 + j * 4 == y) { cout << i << endl << j; } } } return 0; }

#include<iostream> using namespace std; int main(){ int x; int y; int b; cin>>x; cin>>y; for(int a=0;a<x;a++){ if(a*2+(x-a)*4==y){ cout<<a<<endl<<x-a; } } }

#include <bits/stdc++.h> using namespace std; int main(){ int t,j,x,y; cin>>t>>j; x=t*4; y=(x-j)/2; x=t-y; cout <<y<<endl<<x<<endl; }