const int LED_pin[]={3,4,7,10,13};

void setup()
{
  pinMode(LED_pin[0], INPUT);
 pinMode(LED_pin[1], OUTPUT);
 pinMode(LED_pin[2], OUTPUT);
 pinMode(LED_pin[3], OUTPUT);
 pinMode(LED_pin[4], OUTPUT);
Serial.begin(115200);
}

void loop() 
{
   int state=digitalRead(LED_pin[0]);
   
   if(state==HIGH)
   {
    Serial.println("push button pressed");
     digitalWrite(LED_pin[4], HIGH);
     delay(250);
     digitalWrite(LED_pin[4], LOW);
     delay(250);

     digitalWrite(LED_pin[3], HIGH);
     delay(250);
     digitalWrite(LED_pin[3], LOW);
     delay(250);
     
   }
  else
  {
    Serial.println("push button not pressed");
     digitalWrite(LED_pin[1], HIGH);
     delay(250);
     digitalWrite(LED_pin[1], LOW);
     delay(250);

     digitalWrite(LED_pin[2], HIGH);
     delay(250);
     digitalWrite(LED_pin[2], LOW);
     

  }

}