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

C++ :

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