#include <iostream>
#include <vector>
#include <cmath>
#include <thread>
#include <chrono>

int main() {
    std::cout << "Starting heavy task..." << std::endl;
    
    auto start = std::chrono::high_resolution_clock::now();
    double result = 0.0;
    while (std::chrono::duration_cast<std::chrono::seconds>(
               std::chrono::high_resolution_clock::now() - start).count() < 10) {
        for (int i = 0; i < 1000000; ++i) {
            result += std::sin(i) * std::cos(i);
        }
    }

    std::vector<int> dummy(10'000'000, 42); 
    
    std::cout << "Task finished. Result: " << result << std::endl;
    return 0;
}