Secret Key

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Customers of the restaurant wants to meet Chef to thank him for the delicious sweets he made for free on Diwali occasion, but the Chef meets only those who have the secret key present in the string given by the organizers. It’s difficult for the organizers to arrange the seats. Please help them by finding the total number of customers allowed to meet Chef. **NOTE**: Key is Case Sensitive. ### In

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L1 Observation

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L4 Pseudo-code

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solution.cppC++17

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