const int btn = 2;
const int ledH = 5;
const int ledK = 4;
const int ledM = 3;

void setup() {
  // put your setup code here, to run once:
  pinMode(btn, INPUT);
  pinMode(ledH, OUTPUT);
  pinMode(ledK, OUTPUT);
  pinMode(ledM, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int statusBtn = digitalRead(btn);
  if(statusBtn==HIGH){
    digitalWrite(ledK, HIGH);
    delay(3000);
    digitalWrite(ledK, LOW);
    digitalWrite(ledM, HIGH);
    delay(5000);
    digitalWrite(ledK, HIGH);
    delay(2000);
    digitalWrite(ledH, HIGH);
    digitalWrite(ledK, LOW);
    digitalWrite(ledM, LOW);
    delay(3000);
    digitalWrite(ledH, LOW);
  }
}