#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,d=0,g;
	cin>>n;
	while(n){
		g=n%10;
		n=n/10;
		d=d*10+g;
		
		
	} 
	cout<<d;

	return 0;
}

/**************************************************************
	Problem: 1121
	User: cyp
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/