#include<bits/stdc++.h>
using namespace std;
int s,n,a,b,c,d,i,h;
int main(){
	cin>>n;
	while(i<=n){
		a=i%10;
		b=i/10%10;
		c=i/100%10;
		d=i/1000;
		h=a+b+c+d;
		if(h%2!=0&&h%5!=0) s++;
		i++;
	}
	cout<<s;
	return 0;
}
/**************************************************************
	Problem: 1395
	User: zhangziang
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/