#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <math.h>

void save_tens(unsigned long *p, unsigned long* n)
{

	while ((*p % 10 == 0)&&(*n!=0))
	{
		*p = *p / 10;
		*n = *n - 1;
	}
}

int quick_pow10(int n)
{
	static int pow10[10] = {1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000};

	return pow10[n];
}

int len(unsigned long x) {
	if (x >= 1000000000) return 10;
	if (x >= 100000000)  return 9;
	if (x >= 10000000)   return 8;
	if (x >= 1000000)    return 7;
	if (x >= 100000)     return 6;
	if (x >= 10000)      return 5;
	if (x >= 1000)       return 4;
	if (x >= 100)        return 3;
	if (x >= 10)         return 2;
	return 1;
}

int main()
{
	FILE* f = fopen("fact.in", "rt");
	unsigned long n, p = 1, i = 2;
	
	fscanf(f, "%lu", &n);

	while (n)
	{
		p = (p * i) % quick_pow10((len(i)+1));
		save_tens(&p, &n);
		printf("%d %d \n", p, n);
		i++;
	}

	f = fopen("fact.out", "wt");

	fprintf(f, "%lu \n", i-1);
	fflush(stdout);

	fclose(f);
	return 0;
}