在使用 OpenAI、Claude、Gemini 等大语言模型 API 构建对话系统时,开发者普遍面临成本不断上升的挑战。无论是基于检索增强生成(RAG)的应用还是独立的对话系统,这些系统都需要维护对话历史以确保上下文的连贯性,类似于…
Codeforces Round 1028 (Div. 2) C. Gellyfish and Flaming Peony
题目
Gellyfish hates math problems, but she has to finish her math homework:
Gellyfish is given an array of n n n positive integers a 1 , a 2 , … , a n a_1, a_2, \ldots, a_n a1,a2,…,a…