output_description: Print the integer in Takahashi's mind after he eats all the symbols.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      S
attempt: import functools
  
  import os
  
  INF = float("inf")
  
  
  def inp():
      return int(input())
  
  
  def inpf():
      return float(input())
  
  
  def inps():
      return input()
  
  
  def inl():
      return list(map(int, input().split()))
  
  
  def inlf():
      return list(map(float, input().split()))
  
  
  def inls():
      return input().split()
  
  
  def debug(fn):
      if not os.getenv("LOCAL"):
          return fn
  
      @functools.wraps(fn)
      def wrapper(*args, **kwargs):
          print(
              "DEBUG: {}({}) -> ".format(
                  fn.__name__,
                  ", ".join(
                      list(map(str, args))
                      + ["{}={}".format(k, str(v)) for k, v in kwargs.items()]
                  ),
              ),
              end="",
          )
          ret = fn(*args, **kwargs)
          print(ret)
          return ret
  
      return wrapper
  
  
  s = input()
  print(s.count("+") - s.count("-"))
  
problem_description: Statement
  
  There is always an integer in Takahashi's mind.
  
  Initially, the integer in Takahashi's mind is 0. Takahashi is now going to eat
  four symbols, each of which is `+` or `-`. When he eats `+`, the integer in
  his mind increases by 1; when he eats `-`, the integer in his mind decreases
  by 1.
  
  The symbols Takahashi is going to eat are given to you as a string S. The i-th
  character in S is the i-th symbol for him to eat.
  
  Find the integer in Takahashi's mind after he eats all the symbols.
samples: [{"input": "+-++", "output": "2\n    \n\n  * Initially, the integer in Takahashi's mind is 0.\n  * The first integer for him to eat is `+`. After eating it, the integer in his mind becomes 1.\n  * The second integer to eat is `-`. After eating it, the integer in his mind becomes 0.\n  * The third integer to eat is `+`. After eating it, the integer in his mind becomes 1.\n  * The fourth integer to eat is `+`. After eating it, the integer in his mind becomes 2.\n\nThus, the integer in Takahashi's mind after he eats all the symbols is 2.\n\n* * *"}, {"input": "-+--", "output": "-2\n    \n\n* * *"}, {"input": "----", "output": "-4"}]