#include <iostream>
#include <chrono>

int main() {
    using namespace std::chrono_literals;
    auto planned = 12min + 90s;
    std::cout << "Seconds: " << std::chrono::duration_cast<std::chrono::seconds>(planned).count() << '\n';
    std::cout << "Whole minutes: " << std::chrono::duration_cast<std::chrono::minutes>(planned).count() << '\n';
}