n, m, c = [int(x) for x in input().split()]

res = False
if n == 2 or m == 2:
    res = True
elif n == 1 or m == 1:
    res = False
elif n % 2 == 0 or m % 2 == 0:
    res = True

if res:
    print('YES')
else:
    print('NO')