output_description: Print the number of days for which the forecast was correct.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      S
      T
attempt: print(sum([a == b for a, b in zip(input(), input())]))
  
problem_description: Statement
  
  You will be given a string S of length 3 representing the weather forecast for
  three days in the past.
  
  The i-th character (1 \leq i \leq 3) of S represents the forecast for the i-th
  day. `S`, `C`, and `R` stand for sunny, cloudy, and rainy, respectively.
  
  You will also be given a string T of length 3 representing the actual weather
  on those three days.
  
  The i-th character (1 \leq i \leq 3) of S represents the actual weather on the
  i-th day. `S`, `C`, and `R` stand for sunny, cloudy, and rainy, respectively.
  
  Print the number of days for which the forecast was correct.
samples: [{"input": "CSS\n    CSR", "output": "2\n    \n\n  * For the first day, it was forecast to be cloudy, and it was indeed cloudy.\n  * For the second day, it was forecast to be sunny, and it was indeed sunny.\n  * For the third day, it was forecast to be sunny, but it was rainy.\n\nThus, the forecast was correct for two days in this case.\n\n* * *"}, {"input": "SSR\n    SSR", "output": "3\n    \n\n* * *"}, {"input": "RRR\n    SSS", "output": "0"}]