#include <stdio.h>

#include <stdlib.h>

#include <string.h>

int reverse(int i)

{

    int flag;

    if(i > )

    {

        flag = ;

    }

    else

    {

      flag = -;

    }

    i *= flag;

    char *tmp = (char*)malloc(sizeof(char)*);

    sprintf(tmp, "%d", i);

    printf("%s", tmp);

    int len = strlen(tmp);

    int j;

    char a;

    for(j = ; j < len/; ++j)

    {

        a = tmp[j];

        tmp[j] = tmp[len-j-];

        tmp[len-j-] = a;

    }

    i = atoi(tmp);

    i *= flag;

    free(tmp);

    return i;

    } 

int main(void)

    {

        int i;

        scanf("%d", &i);

        i = reverse(i);

        printf(" %d", i);

        return ;

    }