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Leetcode 2834. Find the Minimum Possible Sum of a Beautiful Array
Choose n distinct positive integers with no two summing to target so that their total is minimized, and return that sum modulo 1e9+7. The core challenge is to greedily pick the smallest allowed integers while avoiding complementary pairs (x, target−x) and handling very large n (up to 1e9) via arithmetic counting instead of simulation.
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