Box and Ball System

CodeChefRating 2107Open on judge ↗

Chef Ciel has forgotten the combination to the safe. It's a serious incident, because the safe contains this month's waitstaff salaries. To open the safe, N boxes and N balls are used. The safe has N boxes that numbered from 1 to N uniquely. Each box can contain only one ball. Now, the box i contains one ball that numbered i, and the safe is locked. The only things which Ciel remember for unlock

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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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