#include <iostream>
#include <string>
#include <cctype>
#include <algorithm>
 
int main() {
    const std::string s { "f9c02b6c9da8943feaea4966ba7417d65de2fe7e" };
    std::cout << std::count(begin(s), end(s), '7') << std::endl;
    std::cout << std::count_if(begin(s), end(s), isdigit) << std::endl;
}