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Open Sesame

In front of you opens a vast library, filled with loads of books from all around the world, guarded by Ali Baba himself! In order to get inside the library, however, you must play a game, which goes as follows. Ali Baba picks out a big book off the shelf, consisting of N pages and hands it to you. He then randomly selects a secret digit from 0 to 9 in his head, and asks you to randomly open the

HINT LADDERno hints yet
L1 Observation
L2 Technique
L3 Approach
L4 Pseudo-code
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L5 Full solution
L5 unlocks only if you insist twice
solution.cppC++17

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