def solve():

  a, b = list(map(int, input().split()))

  d = a * b

  if d % 2 == 0:

    print('No')

  else:

    print('Yes')



solve()
def main():

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

    for c in range(1, 4):

        re = A * B * c

        if re % 2 == 1:

            print('Yes')

            return

    print('No')

    return



main()
def solve():
    a, b = list(map(int, input().split()))
    d = a * b
    if d % 2 == 0:
        print("No")
    else:
        print("Yes")


solve()

def main():
    A, B = list(map(int, input().split(" ")))
    for c in range(1, 4):
        re = A * B * c
        if re % 2 == 1:
            print("Yes")
            return
    print("No")
    return


main()

-def solve(): -    a, b = list(map(int, input().split())) -    d = a * b -    if d % 2 == 0: -        print("No") -    else: -        print("Yes") +def main(): +    A, B = list(map(int, input().split(" "))) +    for c in range(1, 4): +        re = A * B * c +        if re % 2 == 1: +            print("Yes") +            return +    print("No") +    return -solve() +main()