const int ledrojo=4;
const int ledazul=3;
const int ledamar=8;

int cont=0;
void setup() {
  // put your setup code here, to run once:
pinMode(ledrojo, OUTPUT);
pinMode(ledazul, OUTPUT);
pinMode(ledamar,OUTPUT);
Serial.begin(9600);
}
void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(ledamar, LOW);//enciendo led amarillo
  delay(200);
  digitalWrite(ledamar, HIGH);// apago led amarillo
  delay(200);

if(cont>5){
  digitalWrite(ledrojo, HIGH);
  digitalWrite(ledazul, LOW);
}
else{
digitalWrite(ledrojo, 1);
digitalWrite(ledazul, 0);
Serial.print("led");
Serial.println(" encendido");
cont=cont+1;
delay(1000);
digitalWrite(ledrojo,0);
digitalWrite(ledazul, 1);
Serial.println("led apagado");
delay(1000);
Serial.print("contador=");
Serial.println(cont);
}
}