#include <bits/stdc++.h>
using namespace std;
long long n;
bool a[100005];
int main()
{
	cin >> n;
	for (int i = 1;i <= n;i++)
	{
		for (int j = 1;j <= n;j += i)
		{
			if (a[j] == 0)
			{
				a[j] = 1;
			}
			else
			{
				a[j] = 1;
			}
		} 
	}
	for (int i = 1;i <= n;i++)
	{
		if (a[i])
		{
			cout << i;
		}
	}
}