int ledm = 10;
int ledk = 9; 
int ledb = 8;
int buzzer = 6;
int btn = 5;

void setup() {
  //Put your setup code here, to run once:
pinMode(ledm, OUTPUT);
pinMode(ledk, OUTPUT);
pinMode(ledb, OUTPUT);
pinMode(buzzer, OUTPUT);
pinMode(btn, INPUT_PULLUP);
digitalWrite(ledm, LOW);
digitalWrite(ledk, LOW);
digitalWrite(ledb, LOW);

}

void loop(){
 if(digitalRead(btn) == LOW){
  digitalWrite(ledm, HIGH);
  tone(buzzer, 5000);
  delay(3000);
  digitalWrite(ledm, LOW);
  noTone(buzzer);
  delay(1000);
  digitalWrite(ledm, HIGH);
  tone(buzzer, 5000);
  delay(3000);
  digitalWrite(ledm, LOW);
  noTone(buzzer);
  
  digitalWrite(ledk, HIGH);
  delay(5000);
  digitalWrite(ledk, LOW);
  delay(1000);
  digitalWrite(ledk, HIGH);
  delay(5000);
  digitalWrite(ledk, LOW);

  digitalWrite(ledb, HIGH);
  tone(buzzer, 1000);
  delay(2000);
  digitalWrite(ledb, LOW);
  noTone(buzzer);
  delay(1000);
  digitalWrite(ledb, HIGH);
  tone(buzzer, 1000);
  delay(2000);
  digitalWrite(ledb, LOW);
  noTone(buzzer);
 }
}