#include <iostream>
#include <tuple>
#include <variant>
#include <string>
#include <type_traits>

int main() {
    auto [stops, minutes] = std::tuple{3, 45};
    std::variant<int, std::string> result{std::string{"route unavailable"}};
    std::cout << "Plan: " << stops << " stops, " << minutes << " minutes\n";
    std::visit([](const auto& value) { std::cout << "Result: " << value << '\n'; }, result);
}