code1, code2 = [int(x) for x in input().split()]

if not (int(code1) % 2) or (int(code2) % 2):
    print("yes")
else:
    print("no")

#What's wrong?

in this task i should use:
code1 = input()
code2 = input()

except of:
code1, code2 = [int(x) for x in input().split()]