#include<bits/stdc++.h>
using lint=long long;
int main(){
    std::cin.tie(nullptr);std::ios_base::sync_with_stdio(false);
    std::cout.setf(std::ios_base::fixed);std::cout.precision(15);
    std::vector<lint>hole={1,0,0,0,1,0,1,0,2,1};
    std::string s;std::cin>>s;
    lint a=1,b=0;
    for(char c:s){
        lint x=c-'0';
        a+=hole.at(x),b++;
    }
    std::cout<<a+b+std::min(a,b)<<'\n';
}