public String alarmClock(int day, boolean vacation) {
  if (vacation) {
    if (1 <= day && day <= 5) {
      return "10:00";
    }
    else {
      return "off";
    }
  }
  else {
    if (1 <= day && day <= 5) {
      return "7:00";
    }
    else {
      return "10:00";
    }
  }
}

public String alarmClock(int day, boolean vacation) {
  if (1 <= day && day <= 5) {
    if (vacation) {
      return "10:00";
    }
    else {
      return "7:00";
    }
  }
  else {
    if (vacation) {
      return "off";
    }
    else {
      return "10:00";
    }
  }
}

public String alarmClock(int day, boolean vacation) {
  boolean weekday = (1 <= day && day <= 5);

  if (vacation) {
    if (weekday) {
      return "10:00";
    }
    else {
      return "off";
    }
  }
  else {
    if (weekday) {
      return "7:00";
    }
    else {
      return "10:00";
    }
  }
}

public String alarmClock(int day, boolean vacation) {
  String EARLY;
  String LATE;
  if (vacation) {
    EARLY = "10:00";
    LATE = "off";
  }
  else {
    EARLY = "7:00";
    LATE = "10:00";
  }

  boolean weekday = (1 <= day && day <= 5);
  if (weekday) {
    return EARLY;
  }
  else {
    return LATE;
  }
}

public String alarmClock(int day, boolean vacation) {
  String EARLY = "7:00";
  String LATE = "10:00";
  if (vacation) {
    EARLY = "10:00";
    LATE = "off";
  }

  boolean weekday = (1 <= day && day <= 5);
  if (weekday) {
    return EARLY;
  }
  else {
    return LATE;
  }
}