N,M,C = map(int,input().split())
def prt(x):
    if x == 0:
        print("NO")
        exit()
    else:
        print("Yes")
        exit()

if N == 1:
    if M == 1:
        prt(1)
    else:
        prt(0)
if N % 2 == 0 or M % 2 == 0:
    prt(1)
prt(0)