fibs = [1]

a = 1
b = 1

while a <= 4_000_000 or b <= 4_000_000:
    num = a + b 
    fibs.append(num)
    a = b
    b = num
print(fibs)

even_fibs = []
for i in fibs:
    if i % 2 == 0:
        even_fibs.append(i)

print(sum(even_fibs))