import machine
from machine import Pin

# Salidas
led0 = Pin(0, Pin.OUT)  
led1 = Pin(1, Pin.OUT)  
led2 = Pin(2, Pin.OUT) 

# Entradas
number0 = Pin(4, Pin.IN, Pin.PULL_UP)  
number1 = Pin(5, Pin.IN, Pin.PULL_UP)  
number2 = Pin(6, Pin.IN, Pin.PULL_UP)  
number3 = Pin(7, Pin.IN, Pin.PULL_UP) 

while True:
    N0 = number0.value()
    N1 = number1.value()
    N2 = number2.value()
    N3 = number3.value()

    S0 = (N0 ^ N2)  
    S1 = ((N0 and N2) ^ (N1 ^ N3))  
    S2 = (N1 and N3) or (N0 and N2 and (N1 ^ N3))  

    led0.value(int(S0))
    led1.value(int(S1))
    led2.value(int(S2))