#include <stdio.h>

int main() {
    char c, s[256];
    int n = 0, st = 0;

    while(st == 0){
        scanf("%c", &c);
        st = (c == '\n');
        s[n] = c * (1 - st);
        n = n + (1 - st);
    }

    while(n > 0) {
        n -= 1;
        printf("%c", s[n]);
    }
    printf("\n");
    return 0;
}