PUMaC 2024 · 个人决赛（B 组） · 第 1 题

PUMaC 2024 — Individual Finals (Division B) — Problem 1

Let n be a positive integer. Find, with proof, the smallest integer k for which every subset of { 1 , 2 , · · · , 2024 n } of size k contains two elements a, b such that gcd( a, b ) ≤ 2023 . √ √ √

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