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

return 0;
}
/**************************************************************
	Problem: 1121
	User: BUDIN666
	Language: C
	Result: Compile Error
****************************************************************/