#include <bits/stdc++.h>
using namespace std;

int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);  
	int n;
	int ans = 0;
	while(cin >> n) {
		if(n % 15 == 0) {
			ans += 8;
				cerr << "FB ";
		}
		else if(n % 5 == 0 || n % 3 == 0) {
			ans += 4;
				cerr << "F ";
		}
		else {
			while(n > 0) {
				ans++;
				n /= 10;
			}
			 cerr << "N ";
		}
			cerr << ans << endl;
	}
	cout << ans << endl;
	return 0;	
}