Codeforces Solution 2143 A. All Lengths Subtraction
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Codeforces Solution 2143 A. All Lengths Subtraction
In this video, we solve Codeforces problem “A. All Lengths Subtraction” from Round 1051 (Div. 2). You are given a permutation p of length n, and for every k from 1 to n you must choose a subarray of length k and subtract 1 from all its elements. The goal is to make all elements zero after exactly n operations. We explain the core idea, show ...
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