#include<bits/stdc++.h>
using namespace std;
int main(){
    char a,b,c;
    cin>>a>>b>>c;
    /*if(c=='0'){
        if(b=='0') cout<<a;
        else cout<<b<<a;
        return 0;
    }*/
    cout<<c<<b<<a;//是我多想了
    return 0;
}