#include<stdio.h> int main() { int n; scanf("%d",&n); while(n!=0){ printf("%d",n%10); n/=10; } return 0; }

#include<bits/stdc++.h>
using namespace std;
int main()
{
     string s;
	cin>>s;
	reverse(s.begin(),s.end());
	cout<<s;
     return 0;
}