The Great Lane

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Dufresne is a top banker in his country and he is in charge of all of the banks in the country. There are a total of $N$ banks in the country, which are placed in different parts all over the whole country. Each of the banks are directly connected to each of the other banks by straight roads. There is a place called **_The Great Lane_** in the country, which is a dream land for all the bankers. I

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