不会做的，回家； #include <bits/stdc++.h> using namespace std; int main(){ int a,b; cin>>a>>b; cout<<a<<endl<<b; return 0; }

换行可以用endl或/n #include <bits/stdc++.h> using namespace std; int main() { int a,b; cin>>a>>b; cout<<a<<endl<<b; return 0; }

#include<iostream> using namespace std; int main() { long long a,b; cin>>a>>b; cout<<a<<endl<<b; return 0; }

#include<iostream> using namespace std; int main() { int a,b; cin>>a>>b; cout<<a<<endl<<b; return 0; }

#include <iostream> using namespace std ; int main(){ int a,b; cin>>a>>b; cout <<a<<endl; cout <<b<<endl; }

#include<iostream> using namespace std; int main(){ int a,b;cin >> a >> b; cout << a << endl; cout << b; }

#include<iostream> using namespace std; int main(){ int a,b; cin>>a>>b; cout<<a <<endl; cout<<b; return 0; }

#include <iostream> using namespace std; int main(){ int a; int b; cin>>a; cin>>b; cout<<a<<endl; cout<<b; return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ int a,b; cin>>a>>b; cout <<a<<endl<<b; }

#include <bits/stdc++.h> using namespace std; int main(){ int n,m; cin>>n>>m; cout<<n<<endl; cout<<m; return 0; }