// yukicoder: No.543 命題
// 2019.4.19 bal4u

#include <stdio.h>

#define gc() getchar()
#define pc(c) putchar(c)

int main()
{
	int a, b;
	a = gc(), gc(), b = gc();
	putchar(b), pc(' '), putchar(a), pc('\n');
	return 0;
}