#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
const int buttonPin = 6;
const int buzzerPin = 5;
int buttonState = 0;
unsigned long startTime = 0;
bool timerRunning = false;    
const unsigned long timerDuration = 11000;
void setup() {
  lcd.begin(16, 2); 
  lcd.clear();     
  lcd.setCursor(0,0);
  lcd.print("Press to start");
  pinMode(buttonPin, INPUT);
  pinMode(buzzerPin, OUTPUT);
  digitalWrite(buzzerPin, LOW);
}
void loop() {
  buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH && !timerRunning) {
    startTime = millis();  
    timerRunning = true; 
    lcd.clear(); 
  }
  if (timerRunning) {
    unsigned long elapsedTime = millis() - startTime;
    if (elapsedTime >= timerDuration) {
      timerRunning = false;
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("0");
      tone(buzzerPin, 1000); 
      delay(1000);
      noTone(buzzerPin); 
    } else {
      unsigned long remainingTime = (timerDuration - elapsedTime) / 1000;
      lcd.clear();
      lcd.setCursor(0,0); 
      lcd.print(remainingTime);
    }
  }
  delay(50);
}