// Time class, representing time as hours and minutes since midnight
class Time {
  public static int timezone = 60;
  public final static Time noon = new Time(12, 0);
  private int hours, min;       // since midnight
  
  Time(int hours, int min) { 
    this.hours = hours; 
    this.min = min; 
  }

  public Time(int hours) { 
    this.hours = hours; 
  }

  public Time(Time t) { 
    hours = t.hours; 
    min = t.min; 
  }

  public int getHours() { 
    return hours; 
  }

  public int getMin() { 
    return min; 
  }

  public String toString() { 
    return hours + "." + min;
  }

  public Time plus(int min) { 
    int totalmin = 60 * this.hours + this.min + min;
    return new Time(totalmin / 60, totalmin % 60); 
  }

  public int to(Time t) { 
    return 60 * t.hours + t.min - 60 * hours - min; 
  }

  public boolean before(Time t) { 
    return hours < t.hours || hours == t.hours && min <= t.min; 
  }

  public void flyt(int min) { 
    int totalmin = 60 * this.hours + this.min + min;
    this.hours = totalmin / 60;
    this.min = totalmin % 60;
  }

  public void flyt(int hours, int min) { 
    int totalmin = 60 * this.hours + this.min + 60 * hours + min;
    this.hours = totalmin / 60;
    this.min = totalmin % 60;
  }
}