from fractions import gcd
from functools import reduce

N, K = list(map(int, input().split(' ')))

A = list(map(int, input().split(' ')))

 

M = max(A)

G = reduce(gcd, sorted(A))

 

if not K % G and K <= M:

    print('POSSIBLE')

else:

    print('IMPOSSIBLE')
from fractions import gcd
from functools import reduce

 

 

def get_difference():

	# get input from raw_input()

	n, k = list(map(int, input().split(' ')))

	l = [int(e) for e in input().split(' ')]

	if k in l:

		print("POSSIBLE")

		return

	if k>max(l):

		print("IMPOSSIBLE")

		return

	gcd_v = reduce(gcd, l)

	if k%gcd_v==0:

		print("POSSIBLE")

	else:

		print("IMPOSSIBLE")

 

 

if __name__ == "__main__":

	get_difference()
from fractions import gcd
from functools import reduce

N, K = list(map(int, input().split(" ")))
A = list(map(int, input().split(" ")))
M = max(A)
G = reduce(gcd, sorted(A))
if not K % G and K <= M:
    print("POSSIBLE")
else:
    print("IMPOSSIBLE")

from fractions import gcd
from functools import reduce


def get_difference():
    # get input from raw_input()
    n, k = list(map(int, input().split(" ")))
    l = [int(e) for e in input().split(" ")]
    if k in l:
        print("POSSIBLE")
        return
    if k > max(l):
        print("IMPOSSIBLE")
        return
    gcd_v = reduce(gcd, l)
    if k % gcd_v == 0:
        print("POSSIBLE")
    else:
        print("IMPOSSIBLE")


if __name__ == "__main__":
    get_difference()

-N, K = list(map(int, input().split(" "))) -A = list(map(int, input().split(" "))) -M = max(A) -G = reduce(gcd, sorted(A)) -if not K % G and K <= M: -    print("POSSIBLE") -else: -    print("IMPOSSIBLE") + +def get_difference(): +    # get input from raw_input() +    n, k = list(map(int, input().split(" "))) +    l = [int(e) for e in input().split(" ")] +    if k in l: +        print("POSSIBLE") +        return +    if k > max(l): +        print("IMPOSSIBLE") +        return +    gcd_v = reduce(gcd, l) +    if k % gcd_v == 0: +        print("POSSIBLE") +    else: +        print("IMPOSSIBLE") + + +if __name__ == "__main__": +    get_difference()