#include <iostream>
#include <vector>
#include <string>
#include <algorithm>

class Packet {
public:
    std::string sourceIP;
    std::string destinationIP;
    int port;

    Packet(std::string src, std::string dest, int p) 
        : sourceIP(src), destinationIP(dest), port(p) {}
};

class PacketFilter {
private:
    std::vector<std::string> blockedIPs;

public:
    void addBlockedIP(const std::string& ip) {
        blockedIPs.push_back(ip);
    }

    bool isBlocked(const Packet& packet) {
        return std::find(blockedIPs.begin(), blockedIPs.end(), packet.sourceIP) != blockedIPs.end();
    }

    void processPacket(const Packet& packet) {
        if (isBlocked(packet)) {
            std::cout << "Blocked packet from: " << packet.sourceIP << std::endl;
        } else {
            std::cout << "Allowed packet from: " << packet.sourceIP << std::endl;
        }
    }
};

int main() {
    PacketFilter filter;
    filter.addBlockedIP("192.168.1.10");
    filter.addBlockedIP("10.0.0.5");

    std::vector<Packet> packets = {
        Packet("192.168.1.10", "192.168.1.1", 80),
        Packet("10.0.0.5", "192.168.1.2", 443),
        Packet("192.168.1.20", "192.168.1.3", 22),
        Packet("172.16.0.1", "192.168.1.4", 8080)
    };

    for (const auto& packet : packets) {
        filter.processPacket(packet);
    }

    return 0;
}