Beautiful Country

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Once upon a time, in a world where competitive programming was the most popular sport, there was a young programmer named Smith. One day, he came across a problem that piqued his interest: given a map of a country with $N$ cities and $M$ roads, determine how many new roads are need to made to make that country beautiful. Beautiful country is a country in which following property holds : If there

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solution.cppC++17

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