#include<stdio.h>
int main(){
    int n,i;
    scanf("%d",&n);
    if(n<0){
        printf("Invalid Input");
        return 0;
    }
    int arr[n];
    for(i=0;i<=n;scanf("%d",&arr[i++]));
    for(i=n-1;i>=0;printf("%d",arr[i-1]));
}