The Three Topics
The Chef has reached the finals of the Annual Inter-school Declamation contest. For the finals, students were asked to prepare $10$ topics. However, Chef was only able to prepare three topics, numbered $A$, $B$ and $C$ — he is totally blank about the other topics. This means Chef can only win the contest if he gets the topics $A$, $B$ or $C$ to speak about. On the contest day, Chef gets topic $X
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solution.cppC++17
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