#include <iostream>
using namespace std;
int main(){
	int a,b;
	cin>>a>>b;
	//===方法1
	//cout<<b<<" "<<a;
	/*===方法2
	int c=a;
	a=b;
	b=c;
	cout<<a<<" "<<b;
	*/
	//===方法3
	swap(a,b);
	cout<<a<<" "<<b;
	return 0;
}