import machine
import utime

leds = []
for i in range(8):
    led = machine.Pin(i, machine.Pin.OUT)
    leds.append(led)
    leds[i].value(0)

def hamming_distance(string1, string2):
    if len(string1) != len(string2):
        raise ValueError("Strings must be of equal length")
    return sum(el1 != el2 for el1, el2 in zip(string1, string2))

while True:
    string1 = input("Enter the first string: ")
    string2 = input("Enter the second string: ")
    distance = hamming_distance(string1, string2)
    print(f"The Hamming distance between the two strings is {distance}")
    for i in range(distance):
        leds[i].value(1)
    utime.sleep(5)
    for i in range(distance):
        leds[i].value(0)
print("Hello, Pi Pico!")