#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);

void setup() {
  // put your setup code here, to run once:
  lcd.begin(16,2);
  lcd.backlight();
  lcd.clear();
  pinMode(A0, INPUT_PULLUP);
  for(int i=0; i<10; i++) {
    pinMode(i, OUTPUT);
  }
  for(int i=0; i<10; i++) {
    digitalWrite(i, HIGH);
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  
}