#include<stdio.h>
#include<stdlib.h>
#include<ctype.h>
 
int main(){
    int shipments[MAX];
    int n,i;
    
    if(scanf("%d",&n)!=1 || n<1 || n>MAX){
        printf("Invalid input\n");
        return 0;
    }
    for(i=0;i<n;i++){
        int newEntry;
        if(scanf("%d",&newEntry)!=1)
        {
            printf("Invalid input\n");
            return 0;
        }
        shipments[i]=newEntry;
    }
    for(i=n-1;i>=0;i--){
        printf("%d",shipments[i]);
    }
    return 0;
}