#define set(a) digitalWrite(a, HIGH);
#define reset(a) digitalWrite(a, LOW);
int ledV=21;
int ledA=22;
int ledR=23;
int p1=4;
void setup(){
  Serial.begin(115200);
  Serial.println("BIENVENIDO ALBO");
  pinMode(22, OUTPUT);
  pinMode(23, OUTPUT);
  pinMode(21, OUTPUT);
  pinMode(4, INPUT_PULLUP);
}


void loop() {
  digitalWrite(ledV, HIGH);
  digitalWrite(ledA, LOW);
  digitalWrite(ledR, LOW);
  delay(4000); 

 
  digitalWrite(ledV, LOW);
  digitalWrite(ledA, HIGH);
  digitalWrite(ledR, LOW);
  delay(12000); 

  digitalWrite(ledV, LOW);
  digitalWrite(ledA, LOW);
  digitalWrite(ledR, HIGH);
  delay(3000); 



 
}