#include <string>
#include <vector>
#include <list>
#include <cmath>
#include <algorithm>
#include <map>
#include <set>
#include <iostream>
#include <sstream>
#include <cstdio>
#include <cstdlib>
using namespace std;

int main()
{
  int seed;
  int i, j, r, c, v;

  if (!(cin >> seed)) exit(0);

  srand48(seed);
  r = drand48() * 500 + 1;
  c = drand48() * 500 + 1;

  for (i = 0; i < r; i++) {
    if (i != 0) printf(" ");
    for (j = 0; j < c; j++) {
      v = drand48() * 62;
      if (v == 0) printf("%d", v);
      else if (v < 27) printf("%c", v-1+'a');
      else printf("%c", v-27+'A');
    }
  }
  printf("\n");
  return 0;
}