#include <iostream>
using namespace std;

int main(){
	constexpr int arr[] = {1, 0, 0, 0, 1, 0, 1, 0, 2, 1};
	string s;
	cin >> s;
	int sum = 0;
	for(auto& c:s) sum += arr[c - '0'];
		cout << min(2 * s.size() + 1 + sum, 2 + s.size() + 2 * sum) << endl;
}