Лекция. Разбор задач

Problem - C - Codeforces

You are an ambitious king who wants to be the Emperor of The Reals. But to do that, you must first become Emperor of The Integers. Consider a number axis. The capital of your empire is initially at $$$0$$$. There are $$$n$$$ unconquered kingdoms at positions $$$0<x_1<x_2<\ldots<x_n$$$.

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