def main():
  packs = [int(x) for x in raw_input().split()]
  if packs[0] == packs[1]+packs[2]:
      print("Yes")
      return
  if packs[1] == packs[0]+packs[2]:
      print("Yes")
      return
  if packs[2] == packs[0]+packs[1]:
      print("Yes")
      return
  print("No")
  

main()