output_description: Print the price of the bowl of ramen corresponding to S.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      S
attempt: s = input()
  print(700　+ int(s.count('o'))*100)
problem_description: Statement
  
  In "Takahashi-ya", a ramen restaurant, a bowl of ramen costs 700 yen (the
  currency of Japan), plus 100 yen for each kind of topping (boiled egg, sliced
  pork, green onions).
  
  A customer ordered a bowl of ramen and told which toppings to put on his ramen
  to a clerk. The clerk took a memo of the order as a string S. S is three
  characters long, and if the first character in S is `o`, it means the ramen
  should be topped with boiled egg; if that character is `x`, it means the ramen
  should not be topped with boiled egg. Similarly, the second and third
  characters in S mean the presence or absence of sliced pork and green onions
  on top of the ramen.
  
  Write a program that, when S is given, prints the price of the corresponding
  bowl of ramen.
samples: [{"input": "oxo", "output": "900\n    \n\nThe price of a ramen topped with two kinds of toppings, boiled egg and green\nonions, is 700 + 100 \\times 2 = 900 yen.\n\n* * *"}, {"input": "ooo", "output": "1000\n    \n\nThe price of a ramen topped with all three kinds of toppings is 700 + 100\n\\times 3 = 1000 yen.\n\n* * *"}, {"input": "xxx", "output": "700\n    \n\nThe price of a ramen without any toppings is 700 yen."}]