#include<bits/stdc++.h> using namespace std; const int N=1e3+10; int Accepted(int &a,int &b){//Accepted() int t; t=a; a=b; b=t; return 0; } int main() { int a,b; cin >> a >> b; Accepted(a,b); cout << a << " " << b; return 0; } //老登布置的作业系列