#include <iostream>
using namespace std;

class Car {
private:
    string brand;
    string model;
    int speed;

public:
    // Constructor (Method)
    Car(string b, string m) {
        brand = b;
        model = m;
        speed = 0; // Default speed
    }

    // Method to set speed
    void setSpeed(int s) {
        if (s >= 0) {
            speed = s;
        } else {
            cout << "not v" << endl;
        }
    }

    // Method to accelerate
    void accelerate() {
        speed += 10;
        cout << brand << " " << model << " accelerated to " << speed << " mph." << endl;
    }

    // Method to display car details
    void display() {
        cout << "Car: " << brand << " " << model << ", Speed: " << speed << " mph" << endl;
    }
};

int main() {
    // Creating Car objects
    Car car1("Toyota", "Camry");
    Car car2("Ford", "Mustang");

    car1.display();
    car2.display();

    // Using methods
    car1.setSpeed(30);
    car1.accelerate();
    car2.accelerate();

    return 0;
}