#include <bits/stdc++.h>
#define LL long long
using namespace std;
const int N = 1e5 + 10;
const int INF = 0x3f3f3f3f;
int n , m;
int main()
{
	    cin >> n;
        while (n)
        {
        	m = n % 10;
        	cout << m;
        	n /= 10;
		}
		return 0;
}