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Stressful Training 题目描述: Berland SU holds yet another training contest for its students today. nnn students came, each of them brought his laptop. How 阅读全文
摘要:
传送门 A. Do Not Be Distracted! 题目描述: Polycarp has 2626 tasks. Each task is designated by a capital letter of the Latin alphabet. The teacher asked Polyc 阅读全文