Buggy python submission (verdict: Runtime Error):
import sys
import math
from functools import reduce

readline = sys.stdin.buffer.readline


def main():
    gcd = math.gcd

    def lcm(a, b):
        return a * b // gcd(a, b)

    N, M = map(int, readline().split())
    A = list(set(map(int, readline().split())))

    B = A[::]
    while not any(b % 2 for b in B):
        B = [b // 2 for b in B]

    if not all(b % 2 for b in B):
        print(0)
        return

    semi_lcm = reduce(lcm, (a // 2 for a in A))
    print((M // semi_lcm + 1) // 2)
    return


if __name__ == '__main__':
    main()


Fixed submission:
N, M = map(int, input().split())
a = list(map(int, input().split()))

from math import floor
from fractions import gcd
from functools import reduce


def lcm(x, y):
    return x * y // gcd(x, y)


b = [n // 2 for n in a]

lcm_b = reduce(lcm, b)

for n in b:
    if (lcm_b // n) % 2 == 0:
        print(0)
        exit()

n = floor((M / lcm_b - 1) / 2) + 1

print(n)

Buggy python submission (verdict: Runtime Error):
import sys
from math import gcd
from functools import reduce

read = sys.stdin.read
readline = sys.stdin.readline
readlines = sys.stdin.readlines
sys.setrecursionlimit(10 ** 9)
INF = 1 << 60


def lcm(x, y):
    return x * y // gcd(x, y)


def main():
    N, M, *A = map(int, read().split())
    A = [a // 2 for a in A]

    semi_lcm = reduce(lcm, A)
    for a in A[1:]:
        semi_lcm = lcm(semi_lcm, a)
        if semi_lcm > M or semi_lcm // a % 2 == 0:
            print(0)
            return

    print((M // semi_lcm + 1) // 2)
    return


if __name__ == '__main__':
    main()


Fixed submission:
N, M = map(int, input().split())
a = list(map(int, input().split()))

from math import floor
from fractions import gcd
from functools import reduce


def lcm(x, y):
    return x * y // gcd(x, y)


b = [n // 2 for n in a]

lcm_b = reduce(lcm, b)

for n in b:
    if (lcm_b // n) % 2 == 0:
        print(0)
        exit()

n = floor((M / lcm_b - 1) / 2) + 1

print(n)

Buggy python submission (verdict: Runtime Error):
N, M = map(int, input().split())
a = list(map(int, input().split()))

from math import floor
from fractions import gcd
from functools import reduce


def lcm(x, y):
    return x * y // gcd(x, y)


b = [n // 2 for n in a]

lcm_b = reduce(lcm, b)

for n in b:
    if (lcm_b / n) % 2 == 0:
        print(0)
        exit()

n = floor((M / lcm_b - 1) / 2) + 1

print(n)


Fixed submission:
N, M = map(int, input().split())
a = list(map(int, input().split()))

from math import floor
from fractions import gcd
from functools import reduce


def lcm(x, y):
    return x * y // gcd(x, y)


b = [n // 2 for n in a]

lcm_b = reduce(lcm, b)

for n in b:
    if (lcm_b // n) % 2 == 0:
        print(0)
        exit()

n = floor((M / lcm_b - 1) / 2) + 1

print(n)

Buggy python submission (verdict: Runtime Error):
N, M = map(int, input().split())
a = list(map(int, input().split()))

from math import floor
from fractions import gcd
from functools import reduce


def lcm(x, y):
    return x * y // gcd(x, y)


b = [n // 2 for n in a]

lcm_b = reduce(lcm, b)

for n in b:
    if (lcm_b / n) % 2 == 0:
        print(0)
        exit()

n = floor((M / lcm_b - 1) / 2) + 1

print(n)


Fixed submission:
N, M = map(int, input().split())
a = list(map(int, input().split()))

from math import floor
from fractions import gcd
from functools import reduce


def lcm(x, y):
    return x * y // gcd(x, y)


b = [n // 2 for n in a]

lcm_b = reduce(lcm, b)

for n in b:
    if (lcm_b // n) % 2 == 0:
        print(0)
        exit()

n = floor((M / lcm_b - 1) / 2) + 1

print(n)

Buggy python submission (verdict: Runtime Error):
N, M = map(int, input().split())
a = list(map(int, input().split()))

from math import gcd, floor
from functools import reduce


def lcm(x, y):
    return x * y // gcd(x, y)


b = [n // 2 for n in a]

odd_lcm = b[0]
for i in range(N - 1):
    odd_lcm = lcm(b[i], b[i + 1])
    if odd_lcm // b[i] % 2 == 0 or odd_lcm // b[i + 1] % 2 == 0:
        print(0)
        exit()

n = floor((M / odd_lcm - 1) / 2) + 1

print(n)


Fixed submission:
N, M = map(int, input().split())
a = list(map(int, input().split()))

from math import floor
from fractions import gcd
from functools import reduce


def lcm(x, y):
    return x * y // gcd(x, y)


b = [n // 2 for n in a]

lcm_b = reduce(lcm, b)

for n in b:
    if (lcm_b // n) % 2 == 0:
        print(0)
        exit()

n = floor((M / lcm_b - 1) / 2) + 1

print(n)

Buggy python submission (verdict: Runtime Error):
N, M = map(int, input().split())
a = list(map(int, input().split()))

from math import gcd, floor
from functools import reduce


def lcm(x, y):
    return x * y // gcd(x, y)


b = [n // 2 for n in a]
lcm_b = reduce(lcm, b)
n = floor((M / lcm_b - 1) / 2) + 1

print(n)


Fixed submission:
N, M = map(int, input().split())
a = list(map(int, input().split()))

from math import floor
from fractions import gcd
from functools import reduce


def lcm(x, y):
    return x * y // gcd(x, y)


b = [n // 2 for n in a]

lcm_b = reduce(lcm, b)

for n in b:
    if (lcm_b // n) % 2 == 0:
        print(0)
        exit()

n = floor((M / lcm_b - 1) / 2) + 1

print(n)