#include <stdio.h>
#include <stdlib.h>
#define N 1000
char* product(char *str, int k) {

	int i ,j;
	for (i = 0; (str[i])!= '\0';i++);
	for (j = 0; (str[i]=str[i])!='\0';i++,j++);
	while (k!=0){
		printf ("%s",str);
		k--;
	}
	printf ("\n");
	return str;
}
int main () {

	int k;
	scanf ("%d",&k);
	char *s = malloc (sizeof (char)*k);
	scanf ("%s",s);
	product (s,k);

	return 0;
}