#include <iostream>
#include <fstream>
using namespace std;


const int MAX_SIZE=1000000;

int v[MAX_SIZE];
int n;
ofstream g("fact.out");



inline void citire();
inline void add_data();
int main()
{
	citire();

	if(n==0)
	{
		g<<1;
		g.close();
		return 0;
	}

	add_data();

	g.close();
	return 0;
}


inline void add_data()
{
	int x=5;
	while(v[x-5]<=n)
	{
		v[x]=v[x-5]+v[x/5]+1;
		x+=5;
	}

	int i;
	for(i=5; v[i]<=n; i+=5)
		cout<<i<<" "<<v[i]<<endl;
	cout<<v[i];
}

inline void citire()
{
	std::ifstream f("fact.in");
	f>>n;
	f.close();
}