#include <stdio.h>

long long factoriel(int n) {
  if (n == 0) {
    return 1;
  }
  return n * factoriel(n - 1);
}

void main(void) {
  for (int nb = 0; nb <= 25; nb++) {
    printf("%2d! = %25lld\n", nb, factoriel(nb));
  }
}