#include <iostream>
using namespace std;

int main(){
	int n,i,r = 0,g,s,b,q,w;
	cin>>n;
	for(i=10000;i<=n;i++){
		w = i / 10000;
		q = i /1000 % 10;
		b = i / 100 % 10;
		s = i / 10 % 10;
		g = i % 10;
		if(w%2==0&&q%2==0&&b%2==0&&s%2==0&&g%2==0){
//			cout<<i<<endl;
			r = r + 1;
		}
	}
	
	cout<<r;
}
/**************************************************************
	Problem: 1745
	User: admin
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/