World War 3

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2020 is finally the year every gamer has been waiting for. It's time to show the skills that you've gained playing CoD, Battlefield, Halo, CS, Fortnite and PUBG. While making memes on World War 3, you suddenly got a letter that you've been drafted to the war! There are $N$ countries participating in the war. You analysed all the war strategies and found that all the countries are connected with

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solution.cppC++17

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