#include<LiquidCrystal.h>

const int rs =12, en = 11, d4 =5, d5 = 4, d6 = 3, d7 = 2;

LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

int trigPin1 = 9;

int echoPin1 = 7;

int trigPin2 = 10;

int echoPin2 = 8;

int green =A0;

int red =A2;

int yellow =A1;

int buzzer =A3;