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

return 0;
}
/**************************************************************
	Problem: 1121
	User: BUDIN666
	Language: C++
	Result: Wrong Answer
****************************************************************/