PROVID-19

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Again a new virus - PROVID-19!!!. It started with $1$ person and now spreading like a forest-fire. After a lot of research, all of its properties are known and now it is possible to stop it. Every infected person till $i-th$ day: - Will infect $x$ different non-infected persons on $(i+1)-th$ day. - Will infect $y$ different non-infected persons on $(i+2)-th$ day. You may be wonder

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solution.cppC++17

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