#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <cctype>
#include<algorithm>
#define pf printf
#define sf scanf
#define wh while
#define db double
#define LL long long
#define _USE_MATH_DEFINES
#define re(i,a,b) for(int i=a;i<b;i++)
#define rev(i,a,b) for(int i=a;i>=b;i--)

using namespace std;

int main()
{
    char s[50];
    cin>>s;
    int l=strlen(s);
    rev(i,l-1,0)pf("%c",s[i]);
    pf("\n");
    return 0;
}