import java.io.IOException;

class Fraction {

    private int odometer;
    private int speedometer;
    private boolean checkEngine;

    public dashboard() {
        odometer = 0;
        speedometer = 0;
        checkEngine = false;
    }

    public dashboard(int o, int s) {
       checkEngine = false;

       if(o >= 0 && o <= 99999){
          odometer = o;
        }else {
          odometer = 0;
          checkEngine = true;
        }

        if(s >= 0 && s <= 100){
          speedometer = s;
        }else {
          speedometer = 0;
          checkEngine = true;
        }



    }

    public void accelerate() {
       speedometer++;

       if(speedometer > 100) {
        speedometer = 0;
        checkEngine = true;
       }


    }

    public void drive(int numMinutes) {
        if(numMinutes >= 0 && numMinutes <= 720) {
          odometer = odometer + (int)(numMinutes/60.0*speedometer);

        }
        if(odometer > 99999) {
          odometer = 0;
          checkEngine = true;
        }

    }

    public String toString() {

      String odometerPrint = Integer.toString(odometer);

      String odoReturn="";
      String engineReturn="";

      if(odometerPrint.length() == 1)
        odoReturn = ("Odometer: 0000"+ odometer);
      if(odometerPrint.length() == 2)
        odoReturn = ("Odometer: 000"+ odometer);
      if(odometerPrint.length() == 3)
        odoReturn = ("Odometer: 00"+ odometer);
      if(odometerPrint.length() == 4)
        odoReturn = ("Odometer: 0"+ odometer);
      if(odometerPrint.length() == 5)
        odoReturn = ("Odometer: "+ odometer);

      if(checkEngine == true)
        engineReturn = ("Check Engine: On");
      if(checkEngine == false)
        engineReturn = ("Check Engine: Off");

      return ("Speedometer: "+ speedometer + " MPH\n"+odoReturn+"\n"+engineReturn);


    }


}


public class Main {

    public static void main(String str[]) throws IOException {
        Dashboard dashboard1 = new Dashboard();
        System.out.println("DASHBOARD 1 **************************");
        System.out.println(dashboard1 + "\n");

        Dashboard dashboard2 = new Dashboard(15000, 99);
        System.out.println("DASHBOARD 2 **************************");
        System.out.println(dashboard2 + "\n");
        dashboard2.accelerate();
        System.out.println(dashboard2 + "\n");
        dashboard2.accelerate();
        System.out.println(dashboard2 + "\n");


        Dashboard dashboard3 = new Dashboard(100000, 45);
        System.out.println("DASHBOARD 3 **************************");
        System.out.println(dashboard3 + "\n");

        Dashboard dashboard4 = new Dashboard(-1, 45);
        System.out.println("DASHBOARD 4 **************************");
        System.out.println(dashboard4 + "\n");

        Dashboard dashboard5 = new Dashboard(2500, 101);
        System.out.println("DASHBOARD 5 **************************");
        System.out.println(dashboard5 + "\n");

        Dashboard dashboard6 = new Dashboard(300, -10);
        System.out.println("DASHBOARD 6 **************************");
        System.out.println(dashboard6 + "\n");

        Dashboard dashboard7 = new Dashboard(0, 60);
        System.out.println("DASHBOARD 7 **************************");
        System.out.println(dashboard7 + "\n");
        dashboard7.drive(20);
        System.out.println(dashboard7 + "\n");

        Dashboard dashboard8 = new Dashboard(99999, 60);
        System.out.println("DASHBOARD 8 **************************");
        System.out.println(dashboard8 + "\n");
        dashboard8.drive(1);
        System.out.println(dashboard8 + "\n");

    }
}