#include "ranges.hpp"

namespace cpp20 {

auto even_numbers(const std::vector<int>& input) -> std::vector<int> {
    (void)input;
    return {};
}

auto take_first_three(const std::vector<int>& input) -> std::vector<int> {
    (void)input;
    return {};
}

auto join_strings(const std::vector<std::string>& parts) -> std::string {
    (void)parts;
    return {};
}

}  // namespace cpp20