Buggy python submission (verdict: Runtime Error):
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import sys
import itertools
from functools import reduce
#import math
import fractions
 
def calc_double(n):
    return n//2
def lcm_base(x, y):
    return (x * y) // fractions.gcd(x, y)
 
def lcm(*numbers):
    return reduce(lcm_base, numbers, 1)
 
def lcm_list(numbers):
    return reduce(lcm_base, numbers, 1)
 
def resolve():
    input = sys.stdin.readline
    N,M=map(int,input().rstrip().split())
    A=list(map(int,input().rstrip().split()))
    AA=list(map(calc_double,A))
    """
    AA=[0 for _ in range(N)]
    for i in range(N):
        AA[i]=M//A[i]-0.5
    
    for i in range(N):
        AA[i]
    """
 
    a=lcm_list(AA)
    #a=a//2
    """
    count=0
    for i in range(1,M+1,2):
        if a*i<=M:
            count+=1
        else:
            break
    """
    odd=M//a
    count=(odd+1)//2
 
    print(count)
 
    
 
from io import StringIO
import unittest
 
class TestClass(unittest.TestCase):
    def assertIO(self, input, output):
        stdout, stdin = sys.stdout, sys.stdin
        sys.stdout, sys.stdin = StringIO(), StringIO(input)
        resolve()
        sys.stdout.seek(0)
        out = sys.stdout.read()[:-1]
        sys.stdout, sys.stdin = stdout, stdin
        self.assertEqual(out, output)
    def test_入力例_1(self):
        input = """2 50
6 10"""
        output = """2"""
        self.assertIO(input, output)
    def test_入力例_2(self):
        input = """3 100
14 22 40"""
        output = """0"""
        self.assertIO(input, output)
    def test_入力例_3(self):
        input = """5 1000000000
6 6 2 6 2"""
        output = """166666667"""
        self.assertIO(input, output)
 
if __name__ == "__main__":
    #unittest.main()
    resolve()

Fixed submission:
import sys
import itertools
from functools import reduce
import math
import fractions
#import numpy as np


def calc_double(n):
    return n//2

def calc_num(n):
    c=0
    while n%2==0: #evenなら
        n=n//2
        c+=1
    return c


def lcm_base(x, y):
    return (x * y) // fractions.gcd(x, y)

def lcm_list(numbers):
    return reduce(lcm_base, numbers, 1)


def resolve():
    input = sys.stdin.readline
    N,M=map(int,input().rstrip().split())
    A=list(map(int,input().rstrip().split()))
    #AA=[0 for i in range(N)]    
    AA=list(map(calc_double,A))

    calAA=list(map(calc_num,AA))
    if all([True if calAA[0]==calAA[i] else False for i in range(N)])==False:
        print(0)
        return

    
    """
    for i in range(N):
        buf=A[i]//2
        if buf%2==0:
            print("0")
            return
        AA[i]=buf
    """

    a=lcm_list(AA)
    

    odd=M//a
    count=(odd+1)//2

    print(count)

    

from io import StringIO
import unittest

class TestClass(unittest.TestCase):
    def assertIO(self, input, output):
        stdout, stdin = sys.stdout, sys.stdin
        sys.stdout, sys.stdin = StringIO(), StringIO(input)
        resolve()
        sys.stdout.seek(0)
        out = sys.stdout.read()[:-1]
        sys.stdout, sys.stdin = stdout, stdin
        self.assertEqual(out, output)
    def test_入力例_1(self):
        input = """2 50
6 10"""
        output = """2"""
        self.assertIO(input, output)
    def test_入力例_2(self):
        input = """3 100
14 22 40"""
        output = """0"""
        self.assertIO(input, output)
    def test_入力例_3(self):
        input = """5 1000000000
6 6 2 6 2"""
        output = """166666667"""
        self.assertIO(input, output)

if __name__ == "__main__":
    #unittest.main()
    resolve()

Buggy python submission (verdict: Runtime Error):
import sys
import itertools
from functools import reduce
import math
import fractions
#import numpy as np


def calc_double(n):
    return n//2


def lcm_base(x, y):
    return (x * y) // fractions.gcd(x, y)

def lcm_list(numbers):
    return reduce(lcm_base, numbers, 1)


def resolve():
    input = sys.stdin.readline
    N,M=map(int,input().rstrip().split())
    A=list(map(int,input().rstrip().split()))
    #AA=[0 for i in range(N)]    
    AA=list(map(calc_double,A))

"""
    for i in range(N):
        buf=A[i]//2
        if buf%2==0:
            print("0")
            return
        AA[i]=buf
"""
    
    a=lcm_list(AA)
    

    odd=M//a
    count=(odd+1)//2

    print(count)

    

from io import StringIO
import unittest

class TestClass(unittest.TestCase):
    def assertIO(self, input, output):
        stdout, stdin = sys.stdout, sys.stdin
        sys.stdout, sys.stdin = StringIO(), StringIO(input)
        resolve()
        sys.stdout.seek(0)
        out = sys.stdout.read()[:-1]
        sys.stdout, sys.stdin = stdout, stdin
        self.assertEqual(out, output)
    def test_入力例_1(self):
        input = """2 50
6 10"""
        output = """2"""
        self.assertIO(input, output)
    def test_入力例_2(self):
        input = """3 100
14 22 40"""
        output = """0"""
        self.assertIO(input, output)
    def test_入力例_3(self):
        input = """5 1000000000
6 6 2 6 2"""
        output = """166666667"""
        self.assertIO(input, output)

if __name__ == "__main__":
    #unittest.main()
    resolve()

Fixed submission:
import sys
import itertools
from functools import reduce
import math
import fractions
#import numpy as np


def calc_double(n):
    return n//2

def calc_num(n):
    c=0
    while n%2==0: #evenなら
        n=n//2
        c+=1
    return c


def lcm_base(x, y):
    return (x * y) // fractions.gcd(x, y)

def lcm_list(numbers):
    return reduce(lcm_base, numbers, 1)


def resolve():
    input = sys.stdin.readline
    N,M=map(int,input().rstrip().split())
    A=list(map(int,input().rstrip().split()))
    #AA=[0 for i in range(N)]    
    AA=list(map(calc_double,A))

    calAA=list(map(calc_num,AA))
    if all([True if calAA[0]==calAA[i] else False for i in range(N)])==False:
        print(0)
        return

    
    """
    for i in range(N):
        buf=A[i]//2
        if buf%2==0:
            print("0")
            return
        AA[i]=buf
    """

    a=lcm_list(AA)
    

    odd=M//a
    count=(odd+1)//2

    print(count)

    

from io import StringIO
import unittest

class TestClass(unittest.TestCase):
    def assertIO(self, input, output):
        stdout, stdin = sys.stdout, sys.stdin
        sys.stdout, sys.stdin = StringIO(), StringIO(input)
        resolve()
        sys.stdout.seek(0)
        out = sys.stdout.read()[:-1]
        sys.stdout, sys.stdin = stdout, stdin
        self.assertEqual(out, output)
    def test_入力例_1(self):
        input = """2 50
6 10"""
        output = """2"""
        self.assertIO(input, output)
    def test_入力例_2(self):
        input = """3 100
14 22 40"""
        output = """0"""
        self.assertIO(input, output)
    def test_入力例_3(self):
        input = """5 1000000000
6 6 2 6 2"""
        output = """166666667"""
        self.assertIO(input, output)

if __name__ == "__main__":
    #unittest.main()
    resolve()

Buggy python submission (verdict: Runtime Error):
import sys
import itertools
from functools import reduce
import math
import fractions
#import numpy as np


def calc_double(n):
    return n//2


def lcm_base(x, y):
    return (x * y) // fractions.gcd(x, y)

def lcm_list(numbers):
    return reduce(lcm_base, numbers, 1)


def resolve():
    input = sys.stdin.readline
    N,M=map(int,input().rstrip().split())
    A=list(map(int,input().rstrip().split()))
    AA=[0 for i in range(N)]    
    AA=list(map(calc_double,A))

"""
    for i in range(N):
        buf=A[i]//2
        if buf%2==0:
            print("0")
            return
        AA[i]=buf
"""
    
    a=lcm_list(AA)
    

    odd=M//a
    count=(odd+1)//2

    print(count)

    

from io import StringIO
import unittest

class TestClass(unittest.TestCase):
    def assertIO(self, input, output):
        stdout, stdin = sys.stdout, sys.stdin
        sys.stdout, sys.stdin = StringIO(), StringIO(input)
        resolve()
        sys.stdout.seek(0)
        out = sys.stdout.read()[:-1]
        sys.stdout, sys.stdin = stdout, stdin
        self.assertEqual(out, output)
    def test_入力例_1(self):
        input = """2 50
6 10"""
        output = """2"""
        self.assertIO(input, output)
    def test_入力例_2(self):
        input = """3 100
14 22 40"""
        output = """0"""
        self.assertIO(input, output)
    def test_入力例_3(self):
        input = """5 1000000000
6 6 2 6 2"""
        output = """166666667"""
        self.assertIO(input, output)

if __name__ == "__main__":
    #unittest.main()
    resolve()

Fixed submission:
import sys
import itertools
from functools import reduce
import math
import fractions
#import numpy as np


def calc_double(n):
    return n//2

def calc_num(n):
    c=0
    while n%2==0: #evenなら
        n=n//2
        c+=1
    return c


def lcm_base(x, y):
    return (x * y) // fractions.gcd(x, y)

def lcm_list(numbers):
    return reduce(lcm_base, numbers, 1)


def resolve():
    input = sys.stdin.readline
    N,M=map(int,input().rstrip().split())
    A=list(map(int,input().rstrip().split()))
    #AA=[0 for i in range(N)]    
    AA=list(map(calc_double,A))

    calAA=list(map(calc_num,AA))
    if all([True if calAA[0]==calAA[i] else False for i in range(N)])==False:
        print(0)
        return

    
    """
    for i in range(N):
        buf=A[i]//2
        if buf%2==0:
            print("0")
            return
        AA[i]=buf
    """

    a=lcm_list(AA)
    

    odd=M//a
    count=(odd+1)//2

    print(count)

    

from io import StringIO
import unittest

class TestClass(unittest.TestCase):
    def assertIO(self, input, output):
        stdout, stdin = sys.stdout, sys.stdin
        sys.stdout, sys.stdin = StringIO(), StringIO(input)
        resolve()
        sys.stdout.seek(0)
        out = sys.stdout.read()[:-1]
        sys.stdout, sys.stdin = stdout, stdin
        self.assertEqual(out, output)
    def test_入力例_1(self):
        input = """2 50
6 10"""
        output = """2"""
        self.assertIO(input, output)
    def test_入力例_2(self):
        input = """3 100
14 22 40"""
        output = """0"""
        self.assertIO(input, output)
    def test_入力例_3(self):
        input = """5 1000000000
6 6 2 6 2"""
        output = """166666667"""
        self.assertIO(input, output)

if __name__ == "__main__":
    #unittest.main()
    resolve()

Buggy python submission (verdict: Runtime Error):
import sys
import itertools
from functools import reduce
import math
#import fractions
import numpy as np


def calc_double(n):
    return n//2

"""
def lcm_base(x, y):
    return (x * y) // math.gcd(x, y)

def lcm(*numbers):
    return reduce(lcm_base, numbers, 1)

def lcm_list(numbers):
    return reduce(lcm_base, numbers, 1)
"""


def resolve():
    input = sys.stdin.readline
    N,M=map(int,input().rstrip().split())
    A=list(map(int,input().rstrip().split()))
    AA=list(map(calc_double,A))
    """
    AA=[0 for _ in range(N)]
    for i in range(N):
        AA[i]=M//A[i]-0.5
    
    for i in range(N):
        AA[i]
    """
    aa= np.array(AA)
    a=int(np.lcm.reduce(aa))
    #a=lcm_list(AA)
    #a=a//2
    """
    count=0
    for i in range(1,M+1,2):
        if a*i<=M:
            count+=1
        else:
            break
    """
    odd=M//a
    count=(odd+1)//2

    print(count)

    

from io import StringIO
import unittest

class TestClass(unittest.TestCase):
    def assertIO(self, input, output):
        stdout, stdin = sys.stdout, sys.stdin
        sys.stdout, sys.stdin = StringIO(), StringIO(input)
        resolve()
        sys.stdout.seek(0)
        out = sys.stdout.read()[:-1]
        sys.stdout, sys.stdin = stdout, stdin
        self.assertEqual(out, output)
    def test_入力例_1(self):
        input = """2 50
6 10"""
        output = """2"""
        self.assertIO(input, output)
    def test_入力例_2(self):
        input = """3 100
14 22 40"""
        output = """0"""
        self.assertIO(input, output)
    def test_入力例_3(self):
        input = """5 1000000000
6 6 2 6 2"""
        output = """166666667"""
        self.assertIO(input, output)

if __name__ == "__main__":
    #unittest.main()
    resolve()

Fixed submission:
import sys
import itertools
from functools import reduce
import math
import fractions
#import numpy as np


def calc_double(n):
    return n//2

def calc_num(n):
    c=0
    while n%2==0: #evenなら
        n=n//2
        c+=1
    return c


def lcm_base(x, y):
    return (x * y) // fractions.gcd(x, y)

def lcm_list(numbers):
    return reduce(lcm_base, numbers, 1)


def resolve():
    input = sys.stdin.readline
    N,M=map(int,input().rstrip().split())
    A=list(map(int,input().rstrip().split()))
    #AA=[0 for i in range(N)]    
    AA=list(map(calc_double,A))

    calAA=list(map(calc_num,AA))
    if all([True if calAA[0]==calAA[i] else False for i in range(N)])==False:
        print(0)
        return

    
    """
    for i in range(N):
        buf=A[i]//2
        if buf%2==0:
            print("0")
            return
        AA[i]=buf
    """

    a=lcm_list(AA)
    

    odd=M//a
    count=(odd+1)//2

    print(count)

    

from io import StringIO
import unittest

class TestClass(unittest.TestCase):
    def assertIO(self, input, output):
        stdout, stdin = sys.stdout, sys.stdin
        sys.stdout, sys.stdin = StringIO(), StringIO(input)
        resolve()
        sys.stdout.seek(0)
        out = sys.stdout.read()[:-1]
        sys.stdout, sys.stdin = stdout, stdin
        self.assertEqual(out, output)
    def test_入力例_1(self):
        input = """2 50
6 10"""
        output = """2"""
        self.assertIO(input, output)
    def test_入力例_2(self):
        input = """3 100
14 22 40"""
        output = """0"""
        self.assertIO(input, output)
    def test_入力例_3(self):
        input = """5 1000000000
6 6 2 6 2"""
        output = """166666667"""
        self.assertIO(input, output)

if __name__ == "__main__":
    #unittest.main()
    resolve()