PUMaC 2007 · 组合（B 组） · 第 8 题
PUMaC 2007 — Combinatorics (Division B) — Problem 8
题目详情
- Find the minimum number n such that for any coloring of the integers from 1 to n into two colors, one can find monochromatic a , b , c , and d (not necessarily distinct) such that a + b + c = d .
解析
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Original Explanation
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