N = int(input().strip())
M = int(input().strip())

a = N * 10 + M

if a % 2 == 1:
  print('No')
else:
  b = a // 2
  b = b - min(N * 10, (b // 10) * 10)
  print('b:{}'.format(b))
  
  if b < M:
    print('Yes')
  else:
    print('No')