#include <algorithm>
#include <iostream>
#include <numeric>
#include <string>
#include <vector>

class Package
{
    // step 0: Implement this class
};

int main()
{
    std::vector<Package> package_list {
        /*      name           year  size  checksum */
        Package{"libstml-dev", 2023, 1024, 3155},
        Package{"emacs",       2025,  512, 2638},
        Package{"vscode",      2018, 8192, 9232},
        Package{"gcc",         2022, 2048, 4173},
        Package{"neofetch",    1998,  128, 2236},
        Package{"make",        2006, 1024, 3139},
        Package{"cmake",       2006, 1024, 3138}
    };

    // Step 1: Remove all invalid packages
    
    std::cout << "-== Package Stats ==-" << std::endl;

    // Step 2: Find the oldest packages
    // Step 3: Calculate the total size of all valid packages
    
    std::cout << "Oldest package: " << /* oldest */ << std::endl;
    std::cout << "Total size of all packages: " << /* total_size */ << std::endl;
}