#include <stdio.h>

int main(void)
{
	int num,index;
	char s[11];
	scanf("%d",&num);
	// s'        25'
	//   01234567890
	//   00000000001
	index = 10;
	s[index] = 0;
	index = 9;
	if (num == 0) {
		s[index] = '0';
		index--;
	}
	else {
		while (num > 0) {
			int digit = num % 10;
			s[index] = digit + '0';
			num = num / 10;
			index--;
		}
	}
	printf("%s\n", &s[index+1]);
	return 0;
}