#include<stdio.h>
#include<iostream>

int main(void)
{
	int N = 0;
	int result = 0;
	std::cin >> N;
	if(N>799)
	{
		result = 152 + N - 799;
		std::cout << result;
		return 0;
	}else
	{
		int n = N/100;
		result += n*19;
		N -= n*100;
		if(N>79)
		{
			result += 8 + N - 79;
			if(N>89)
			{
				result -= N-89;
			}
			std::cout << result;
			return 0;
		}else
		{
			n = N/10;
			result += n;
			N -= n*10;
			if(N>7)
			{
				result += 1;
			}
			std::cout << result;
			return 0;
		}
	}
}