output_description: If there are more people wearing a red hat than there are people wearing a
  blue hat, print `Yes`; otherwise, print `No`.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      N
      s
attempt: n = int(input()) - 1
  print("Yes" if sorted(input())[n // 2] == "R" else "No")
  
problem_description: Statement
  
  There are N people numbered 1 to N. Each person wears a red hat or a blue hat.
  
  You are given a string s representing the colors of the people. Person i wears
  a red hat if s_i is `R`, and a blue hat if s_i is `B`.
  
  Determine if there are more people wearing a red hat than people wearing a
  blue hat.
samples: [{"input": "4\n    RRBR", "output": "Yes\n    \n\n  * There are three people wearing a red hat, and one person wearing a blue hat.\n  * Since there are more people wearing a red hat than people wearing a blue hat, the answer is `Yes`.\n\n* * *"}, {"input": "4\n    BRBR", "output": "No\n    \n\n  * There are two people wearing a red hat, and two people wearing a blue hat.\n  * Since there are as many people wearing a red hat as people wearing a blue hat, the answer is `No`."}]