n, m, c = map(int, input().split())
total = n * m

if total % 2 != 0:
    print("NO")
else:
    if (n == 1 or m == 1):
        if total == 2:
            print("YES")
        else:
            print("NO")
    else:
        if (n % 2 == 0 or m % 2 == 0) and not (n == 2 and m == 2):
            print("YES")
        else:
            print("NO")