#include <LiquidCrystal.h>
const int rs = 12, en = 11, d4 = 10, d5 = 9, d6 = 8, d7 = 7;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
void setup() {
  lcd.begin(16, 2);
  lcd.print("hello world!");
}
void loop() {
  lcd.setCursor(10,11);
  lcd.print(millis()/1000);
}