pros millis()
#include <iostream>
#include <chrono>
#include <thread>
int main() {
auto start = std::chrono::steady_clock::now();
// Perform some time-consuming task or wait
std::this_thread::sleep_for(std::chrono::milliseconds(2000));
auto end = std::chrono::steady_clock::now();
auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count();
std::cout << "Elapsed time: " << duration << " milliseconds\n";
return 0;
}