output_description: If M popular items can be selected, print `Yes`; otherwise, print `No`.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      N M
      A_1 ... A_N
attempt: n, m, *a = map(int, open(0).read().split())
  print("YNeos"[len([i for i in a if sum(a) <= 4 * i * m]) < m :: 2])
  
problem_description: Statement
  
  We have held a popularity poll for N items on sale. Item i received A_i votes.
  
  From these N items, we will select M as popular items. However, we cannot
  select an item with less than \dfrac{1}{4M} of the total number of votes.
  
  If M popular items can be selected, print `Yes`; otherwise, print `No`.
samples: [{"input": "4 1\n    5 4 2 1", "output": "Yes\n    \n\nThere were 12 votes in total. The most popular item received 5 votes, and we\ncan select it.\n\n* * *"}, {"input": "3 2\n    380 19 1", "output": "No\n    \n\nThere were 400 votes in total. The second and third most popular items\nreceived less than \\dfrac{1}{4\\times 2} of the total number of votes, so we\ncannot select them. Thus, we cannot select two popular items.\n\n* * *"}, {"input": "12 3\n    4 56 78 901 2 345 67 890 123 45 6 789", "output": "Yes"}]