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

int main() {
	int a, count = 0;
	for (int i = 0; i < 5; i++) {
		cin >> a;
		if (a % 3 == 0) count += 4;
		if (a % 5 == 0) count += 4;
		if (a % 3 != 0 && a % 5 != 0) count += log10(a) + 1;
	}
	cout << count;
}