#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'];
	if(2 <= sum){
		cout << 2 * s.size() + 1 + sum << endl;
	}else{
		cout << 2 + s.size() + sum << endl;
	}
}