const int buttonPin = 12;
const int ledPinRed = 10;//0
const int ledPinYellow = 9;//1
const int ledPinGrren = 8;//2
int statePin = 0;
int countStep = 0;
boolean b = false;

void setup() {

  pinMode(ledPinRed, OUTPUT);
  pinMode(ledPinYellow, OUTPUT);
  pinMode(ledPinGrren, OUTPUT);
  pinMode(buttonPin, INPUT);
}

void loop() {

  //digitalWrite(ledPinRed, HIGH);
  
  statePin = digitalRead(buttonPin);
  
  if(statePin == HIGH){
    digitalWrite(ledPinRed, LOW);
  }else{
    digitalWrite(ledPinRed, HIGH);
  }



}