#include <stdio.h>
#include <string.h>

int main() {
    int n;
    scanf("%d", &n);
    
    if(n<0){
        printf("Inavlid input");
        return 0;
    }
    
    char sentence[100], words[20][20];
    int count = 0;
    
    while(scanf("%s",words[count])==1&&count<n)
    count++;
    
    for(int i=count-1;i>=0;i--)
        printf("%s",words[i])
        
    return 0;
}