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Codeforces Round #656 (Div. 3) D. a-Good String
Kanoon 2020-07-18 01:06 阅读:195 评论:0 推荐:0
Codeforces Global Round 8 D. AND, OR and square sum（位运算）
Kanoon 2020-06-19 10:15 阅读:288 评论:0 推荐:1
Codeforces Round #563 (Div. 2) D. Ehab and the Expected XOR Problem（异或前缀和）
Kanoon 2020-06-13 20:27 阅读:142 评论:0 推荐:0
Codeforces Round #647 (Div. 2) C. Johnny and Another Rating Drop（数学）
Kanoon 2020-06-05 23:16 阅读:217 评论:0 推荐:0
Codeforces Round #647 (Div. 2) B. Johnny and His Hobbies（枚举）
Kanoon 2020-06-05 23:06 阅读:177 评论:0 推荐:0