#include <stdio.h>

unsigned long int factorial(unsigned int n){
  unsigned int i; 
  unsigned long result = 1;
  
  for(i = 1; i <= n; i++)
    result *= i;

  return result;
}

int main(void) {
  unsigned int k;

  for (k = 0; k <= 12; k++)
    printf("%-20lu %20lu\n", k, factorial(k));
  
  return 0;
}