#include <LiquidCrystal.h>
const int rs=11, en=12, d4=4, d5=5, d6=6, d7=7;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
void setup() {
  // put your setup code here, to run once:
lcd.begin(16,2);
lcd.print("hello world!");
}

void loop() {
  // put your main code here, to run repeatedly:
lcd.setCursor(0,1);
lcd.print(millis() / 1000);
}