int c1=1;
int c2 =2;
int t = 12;
int led = 13;
void setup(){
pinMode(c1, INPUT_PULLUP);
pinMode(c2, INPUT_PULLUP);

pinMode(t, INPUT_PULLUP);
pinMode(led, OUTPUT);
}

void loop() {
  if(digitalRead(t)){
digitalWrite(led, LOW);
}else{
digitalWrite(led, HIGH);
}
}