#include <iostream>
#include <string>

int main() {
    std::string n;
    int h[10] = {1, 0, 0, 0, 1, 0, 1, 0, 2, 1};
    int hs;
    int l;
    std::cin >> n;
    l = n.size();
    for (int i = 0; i < l; i++) {
        hs += h[(int)n[i] - (int)'0'];
    }
    std::cout << std::min(l * 2 + hs + 1, l + hs * 2 + 2) << std::endl;
}