#include <stdio.h>

   int main () {
    int n, i , arr[100];

   scanf("%d", &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;
}