import machine
from machine import Pin

ledRojo = Pin(13, Pin.OUT)#b
ledAmarillo = Pin(12, Pin.OUT)#a

ee = Pin(2,Pin.IN)
es = Pin(4,Pin.IN)

while True:
    E = ee.value()
    S = es.value()

    ledRojo.value(S)
    ledAmarillo.value(E)