int pushKey = 0;

void setup()
{
  pinMode(4, INPUT);
  pinMode(0, OUTPUT);
  pinMode(1, OUTPUT);
}

void loop()
{
  pushKey = digitalRead(4); // pushKey Button
  
  if(pushKey == HIGH)
  {
    digitalWrite(0, HIGH);
    digitalWrite(1, HIGH);
  } else {
    digitalWrite(0, LOW);
    digitalWrite(1, LOW);
  }

}