/**
  @file 543.cpp
  @title  No.543 命題 - yukicoder
  @url https://yukicoder.me/problems/no/543
**/

#include <bits/stdc++.h>
using namespace std;

typedef long long LL;
#define ALL(obj) (obj).begin(), (obj).end()
#define REP(i, N) for (int i = 0; i < (N); ++i)

int main() {
  string P, P_;
  cin >> P >> P_;

  cout << P_ << " " << P << endl;
  return 0;
}