#include <iostream>
#include <fstream>>
#include <string>
#include <vector>

int main(void) {

	//std::ifstream inf("Text.txt");	std::cin.rdbuf(inf.rdbuf());
	char a = 0, b = 0;
	std::cin >> a >> b;
	std::cout << b << " " << a << std::endl;

	return 0;
}