PUMaC 2021 · 个人决赛（B 组） · 第 1 题
PUMaC 2021 — Individual Finals (Division B) — Problem 1
题目详情
- Let a, b, c be real numbers in the interval [0 , 1], satisfying ab + c ≤ 1. Find the maximal value of their sum a + b + c .
解析
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Original Explanation
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