#include<stdio.h>
int main()
{
	int n;
	scanf("%d", &n);
	if (n == 0)
	{
		printf("4\n");
		return 0;
	}
	int ans = 1, m = n;
	while (n > 0)
	{
		ans += 2;
		if (n % 10 == 0)ans++;
		if (n % 10 == 4)ans++;
		if (n % 10 == 6)ans++;
		if (n % 10 == 8)ans += 2;
		if (n % 10 == 9)ans++;
		n /= 10;
	}
	int ans1 = 2;
	while (m > 0)
	{
		ans1++;
		if (n % 10 == 0)ans1 += 2;
		if (n % 10 == 4)ans1 += 2;
		if (n % 10 == 6)ans1 += 2;
		if (n % 10 == 8)ans1 += 3;
		if (n % 10 == 9)ans1 += 2;
		m /= 10;
	}
	if (ans > ans1)
		ans = ans1;
	printf("%d\n", ans);
	return 0;
}