/* -*- coding: utf-8 -*-
 *
 * 2887.cc:  No.2887 Minahoshi (Easy) - yukicoder
 */

#include<cstdio>
#include<algorithm>

using namespace std;

/* main */

int main() {
  int n;
  scanf("%d", &n);

  for (int i = 0; i < n; i++) putchar('a');
  putchar('\n');

  return 0;
}