#include <stdio.h>
#include <math.h>

int main()
{
	int a, count = 0;

	for (int i = 0; i < 5; i++){
		if (scanf("%d", &a) != 1) {
			return -1;
		}

		if (a % 3 == 0) {
			count += 4;
		}

		if (a % 5 == 0) {
			count += 4;
		}

		if (a % 3 != 0 && a % 5 != 0) {
			count += log10(a) + 1;
		}
	}

	printf("%d", count);

	return 0;
}