PUMaC 2024 · 组合（A 组） · 第 7 题

PUMaC 2024 — Combinatorics (Division A) — Problem 7

Let ω = e and let S be the set { 1 , ω, . . . , ω } . How many subsets of S sum to 0? Include both S itself and the empty set in your count.

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