#include<stdio.h>
int main () {
    int n, i;

    if(scanf("%d",&n)! = 1 || n< 1 || n > 100)
{
    
printf("Invalid input");
return 0;
}
int arr[n];

for (i=0; i<n; i++){
    
    if ( scanf("%d", &arr[i]) ! = 1){
        printf("Invalid input");
        return 0;
        
    }
}
for (i=n-1; i>=0;i--){
    printf("%d", arr[i]);
}
return 0;
}