N, M, C = map(int, input().split())

def prt(x):
    if x == 0:
        print("NO")
        exit()
    else:
        print("YES")
        exit()

if N > M:
    N, M = M, N

if N == 1:
    if M == 1:
        prt(1)
    else:
        prt(0)

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

prt(0)