#include <stdio.h>
#include <string.h>

void Reverse(char *s)
{
	char *p = s;
	while(*p != '\0') p++;
	p--;
	while(p >= s)
	{
		printf("%c",*p);
		p--;
	}
}

int main()
{
	char s[5];
	while(scanf("%s",s) != EOF)
	{
		Reverse(s);
		printf("\n");
	}
	return 0;
}