#include <iostream>
using namespace std;
int main(){
    int arr[];
    int i,n;
    cin>>n;
    if (n>0){
     for (i=0,i<=n,i++){
     cin>>arr[i];
     }
    }
   else{
       cout<<"Invalid input";
   }
   for (i=n,i>=0,i--){
       cout<<arr[i];
   }
   return 0;
}