output_description: Print `Yes` if w is beautiful. Print `No` otherwise.
  
  * * *
input_description: The input is given from Standard Input in the following format:
  
      
      
      w
attempt: w = input()
  
  num = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
  
  for i in range(len(w)):
      if w[i] == "a":
          num[0] += 1
  
      elif w[i] == "b":
          num[1] += 1
  
      elif w[i] == "c":
          num[2] += 1
  
      elif w[i] == "d":
          num[3] += 1
  
      elif w[i] == "e":
          num[4] += 1
  
      elif w[i] == "f":
          num[5] += 1
  
      elif w[i] == "g":
          num[6] += 1
  
      elif w[i] == "h":
          num[7] += 1
  
      elif w[i] == "i":
          num[8] += 1
  
      elif w[i] == "j":
          num[9] += 1
  
      elif w[i] == "k":
          num[10] += 1
  
      elif w[i] == "l":
          num[11] += 1
  
      elif w[i] == "m":
          num[12] += 1
  
      elif w[i] == "n":
          num[13] += 1
  
      elif w[i] == "o":
          num[14] += 1
  
      elif w[i] == "p":
          num[15] += 1
  
      elif w[i] == "q":
          num[16] += 1
  
      elif w[i] == "r":
          num[17] += 1
  
      elif w[i] == "s":
          num[18] += 1
  
      elif w[i] == "t":
          num[19] += 1
  
      elif w[i] == "u":
          num[20] += 1
  
      elif w[i] == "v":
          num[21] += 1
  
      elif w[i] == "w":
          num[22] += 1
  
      elif w[i] == "x":
          num[23] += 1
  
      elif w[i] == "y":
          num[24] += 1
  
      elif w[i] == "z":
          num[25] += 1
  
  ans = "Yes"
  
  for i in range(len(num)):
      if num[i] % 2 == 1:
          ans = "No"
          break
  
  print(ans)
  
problem_description: Statement
  
  Let w be a string consisting of lowercase letters. We will call w _beautiful_
  if the following condition is satisfied:
  
    * Each lowercase letter of the English alphabet occurs even number of times in w.
  
  You are given the string w. Determine if w is beautiful.
samples: [{"input": "abaccaba", "output": "Yes\n    \n\n`a` occurs four times, `b` occurs twice, `c` occurs twice and the other\nletters occur zero times.\n\n* * *"}, {"input": "hthth", "output": "No"}]