# include <Wire.h>
# include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4);

void setup() { 
  pinMode(2, INPUT);
  pinMode(3, INPUT);
  pinMode(4, INPUT);
  pinMode(5, INPUT);
  Serial.begin(9600); 
  lcd.init();
  lcd.backlight(); 
}

void loop() {
  int x1 = digitalRead(2);
  int x2 = digitalRead(3);
  int x3 = digitalRead(4);
  int x4 = digitalRead(5);
  int A = 360 -((x1*8 + x2*4 + x3*2 + x4)*22.5);
  lcd.clear() ;
  lcd.setCursor(9,1);
  lcd.print(A);
  delay (50);   
}