a = b = c = 0
for n in range(100):
    if n % 2:
        if n % 4:
            a += 1
        continue
    else:
        b += 1
    c += 1
assert a == 50 and b == 50 and c == 50

a = b = c = 0
for n in range(100):
    if n % 2:
        if n % 3:
            a += 1
        continue
    else:
        b += 1
    c += 1
assert a == 33 and b == 50 and c == 50