#20974

#20974
import random
def f(n):
    return (n + 2 - (n % 2))
def g(n):
    return ((n // 2 + 1) * 2)
def t(n):
    return (n + ((n + 1) % 2) * 2 + n % 2)
def p(n):
    return (((n + 1) // 2 + (n + 1) % 2) * 2)
def h(n):
    return ((n + 2) // 2 * 2)
z = 0
for i in range(1000000):
    k = int(random.randint(0, 10000000))
    c = f(k), g(k), t(k), p(k), h(k)
    if not any(c):
        print(c)
        print('something wrong i can feel it')
        z += 1
    #elif (f(k) == g(k) == t(k) == p(k) == h(k)):
    #    print('look here, those numbers are the same\n', c)
print('Сбоев ровно', z)