void setup() {
  // put your setup code here, to run once:
  pinMode(3, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(10, INPUT);
  pinMode(12, OUTPUT);
  
  digitalWrite(12, LOW);
  digitalWrite(5, LOW);
  Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
  if (digitalRead(10)) {
    digitalWrite(3, HIGH);
  } else {
    digitalWrite(3, LOW);
  }
  Serial.println(digitalRead(10));
  delay(100);
}