Challenge: Find the Celebrity
Try to solve the Find the Celebrity problem.
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Statement
In a gathering of individuals (labeled from to ), there’s a possibility of one person being a celebrity. A celebrity is characterized by being known by everyone else and not knowing any attendees. This scenario is represented using an binary , where each cell contains either a or a . If , it signifies that person knows the person.
For the given , determine the existence of a celebrity within the group. If a celebrity is identified, return its label, otherwise return .
Constraints:
- is or .
Examples
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