#include <iostream>
#include <array>
#include <string_view>

int main() {
    constexpr std::array<std::string_view, 5> milestones{"Build one file", "Validate values", "Explain ownership", "Test a boundary", "Review a project"};
    for (std::size_t i = 0; i < milestones.size(); ++i) { std::cout << i + 1 << ". " << milestones[i] << '\n'; }
}