output_description: Print the answer.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      X Y Z
attempt: jj
  
problem_description: Statement
  
  We have a long seat of width X centimeters. There are many people who wants to
  sit here. A person sitting on the seat will always occupy an interval of
  length Y centimeters.
  
  We would like to seat as many people as possible, but they are all very shy,
  and there must be a gap of length at least Z centimeters between two people,
  and between the end of the seat and a person.
  
  At most how many people can sit on the seat?
samples: [{"input": "13 3 1", "output": "3\n    \n\nThere is just enough room for three, as shown below:\n\n![](https://img.atcoder.jp/abc078/4a35302937c3cbc2f625156e7834d27f.png)\n\nFigure\n\n* * *"}, {"input": "12 3 1", "output": "2\n    \n\n* * *"}, {"input": "100000 1 1", "output": "49999\n    \n\n* * *"}, {"input": "64146 123 456", "output": "110\n    \n\n* * *"}, {"input": "64145 123 456", "output": "109"}]