Doors to Chefland

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**This is an interactive problem.** Abhishek is at the doorsteps of Chefland where only smart people are allowed to enter. The doorman plays a game with him to check his smartness. The game goes as follows: The doorman knows the password to Chefland which is a string consisting of $N$ lowercase Latin letters and Abhishek has to guess the password without directly asking for it. Let's cal

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L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

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L5 Full solution

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solution.cppC++17

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