import sys
from functools import reduce
import operator


def input(): return sys.stdin.readline().rstrip('\n')


def main():
    n, h = map(int, input().split())
    a = reduce(operator.mul, map(int, input().split()), 1)
    print('YES' if a % h == 0 else 'NO')


if __name__ == '__main__':
    main()