#include<iostream>
#include<string>
#include<algorithm>
#include<cctype>
#include<set>
#include<bitset>
#include<math.h>
#include<map>
#include<queue>
#include<iomanip>
using namespace std;

int main(){
    string x, y;
    cin >> x >> y;
    swap(x, y);
    cout << x << " " << y << endl;
}