#include <iostream>
#include <string>
using namespace std;
int main()
{
	int n;
	cin >> n;
	int sum = 0;
	string num;
	for (int i = 0; i < n; i++)
	{
		num = string(i);
		for (int j = 0; j < num.length(); j++)
		{
			if (num[j] == '2' || num[j] == '0' || num[j] == '1' || num[j] == '9')
				sum += i;
		}
	}
	cout << sum << endl;
	return 0;
}