#include "bits/stdc++.h"

#define rep(a,b) for(int a = 0;a < b;a++)
#define REP(i, x, n) for(int i = x; i < n; i++)
#define P(a) cout << a << endl
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
int dx[] = { 1, -1 , 0 , 0 };
int dy[] = { 0,  0,  1, -1 };
unsigned long long str_to_int(std::string str) {
	unsigned long long ret;
	std::stringstream ss; ss << str;
	ss >> ret;
	return ret;
}

int main() {
	string s;
	cin >> s;
	int ans1 = 1 + 2*s.length();
	int ans2 = 2 + s.length();
	int sum = 0;
	rep(i, s.length()) {
		if (s[i] == '0' or s[i] == '4' or s[i] == '6' or s[i] == '9') {
			sum += 1;
		}
		else if (s[i] == '8') {
			sum += 2;
		}
	}
	ans1 += sum;
	ans2 += sum * 2;
	P(min(ans1, ans2));
}