#include <bits/stdc++.h>
#include <curl/curl.h> 
using namespace std;

int main() {
    CURL *curl;
    CURLcode res;
    curl = curl_easy_init();
	if(curl) {
        curl_easy_setopt(curl, CURLOPT_URL, "https://codeforces.com/api/problemset.problems");
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, list); 
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        res = curl_easy_perform(curl);
		if(res != CURLE_OK) {
            fprintf(stderr, "curl_easy_perform() failed: %s\n", 
                    curl_easy_strerror(res));
        }
        curl_easy_cleanup(curl);
    }
}

size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp)
{
    ((std::string*)userp)->append((char*)contents, size * nmemb);
    return size * nmemb;
}


class DeepReinforcementLearningAgent {
public:
    void initialize() {
        // Initialize neural network, Q-table, epsilon, etc.
    }
    
    int getAction(std::string problem) {
        // Use neural network and Q-table to determine an action (solution)
        // for the given CodeForces problem.
        return action; 
    }
    
    void update(double reward, std::string problem, int action) {
        // Update neural network and Q-table using the reward for the previous 
        // action on the given problem.
    }
};

int main() {
    DeepReinforcementLearningAgent agent;
    agent.initialize();
    
    CURL *curl;
    CURLcode res;
    std::string response;
    curl = curl_easy_init();
    
	while (true) {
        curl_easy_setopt(curl, CURLOPT_URL, "https://codeforces.com/api/problemset.problems");
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, list); 
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        res = curl_easy_perform(curl);
		if(res != CURLE_OK) {
            // Handle error
        }
        
        // Get next unsolved problem from response string
        std::string problem = ... 
            
        int action = agent.getAction(problem);
        std::string solution = getSolution(action); // Submit solution 
                                                // and get result
            
        double reward;
        if (result == "Accepted") reward = 1;
        else if (result == "Compilation Error") reward = -0.5; 
        else if (result == "Wrong Answer") reward = 0.1;
        else if (result == "Time Limit Exceeded") reward = 0.2;
            
        agent.update(reward, problem, action);  
        
        if (result == "Accepted") std::cout << "Accepted" << '\n';
        else if (result == "Compilation Error") std::cout <<  "Compilation Error" << '\n';
        else if (result == "Wrong Answer") std::cout << "Wrong Answer" << '\n';
        else std::cout << "Time Limit Exceeded" << '\n';
    }
}