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2020年(共84篇)
11-07 牛客练习赛72-C brz的序列 (下凸壳,斜率优化) 10-10 牛客练习赛71 B-烙印 (几何) 06-25 [Educational Codeforces Round 56 (Rated for Div. 2)] —G. Multidimensional Queries(二进制状压,线段树) 06-19 哈尔滨理工大学软件与微电子学院程序设计竞赛(同步赛)(AK题解) 来自专栏 06-19 洛谷P3400 仓鼠窝(单调栈) 06-19 Codeforces Round #628 (Div. 2)] D-Ehab the Xorcist 06-12 牛客练习赛65 - A 最值序列 (贪心) 来自专栏 06-12 牛客练习赛65 - C 二维动点 (几何,思维) 来自专栏 06-12 牛客练习赛65 - C 二维动点 (几何,思维) 06-03 2015 HIAST Collegiate Programming Contest] 题解(AK) 05-31 “科林明伦杯”哈尔滨理工大学第十届程序设计竞赛(同步赛) - G养花 05-23 牛客练习赛64 D-宝石装箱(容斥定律,背包) 05-17 第十七届同济大学程序设计预选赛暨高校网络友谊赛 C-张老师的旅行 05-15 [Codeforces Round #642 (Div. 3)] ABCDEF题解 05-07 [NCD 2019] G. Ali and the Breakfast (解析几何) 05-05 [AtCoder Beginner Contest 165] E - Rotation Matching (构造) 04-30 [2019 ICPC Universidad Nacional de Colombia Programming Contest] 题解 04-29 [Educational Codeforces Round 86 (Rated for Div. 2)] E. Placing Rooks (组合数学,容斥定律) 04-28 [AtCoder Beginner Contest 164] -E - Two Currencies (分层最短路) 04-24 牛客算法周周练3/POJ - 3614 E -Sunscreen(贪心,优先队列) 来自专栏 04-24 牛客算法周周练3 C -小雨坐地铁(分层最短路) 来自专栏 04-24 牛客算法周周练3 C -小雨坐地铁(分层最短路) 04-22 [Codeforces Round #636 (Div. 3)] E. Weights Distributing (BFS+最短路+贪心) 04-21 [AtCoder Beginner Contest 163] **F - path pass i** (树型dfs,容斥定律) 04-21 AtCoder Beginner Contest 163 **E - Active Infants** (DP) 04-19 二维ST表模板 04-17 牛客算法周周练2 - B -Music Problem (背包+bitset优化) 04-11 牛客练习赛61 E-相似的子串(hash+二分) 来自专栏 04-11 牛客练习赛61 E-相似的子串(hash+二分) 04-06 AtCoder Beginner Contest 151 *F - Enclose All* (最小圆覆盖) 04-06 [Codeforces Round #320 (Div. 2) -E. Weakness and Poorness (三分/二分) 04-04 [Codeforces Round #320 (Div. 2) C. A Problem about Polyline (数学) 04-01 [Codeforces Round #630 (Div. 2)] - E. Height All the Same (组合数学) 03-21 Best Reward [HDU - 3613 ] (manacher算法) 03-18 [Educational Codeforces Round 72] A. Creating a Character (简单数学) 03-11 [Codeforces Round #626 (Div. 2, based on Moscow Open Olympiad in Informatics)] -D. Present(异或性质,按位拆分,树桩数组) 03-10 [Educational Codeforces Round 83 ] E. Array Shrinking - (区间DP) 03-09 [AtCoder Beginner Contest 158] - F - Removing Robots (线段树+DP) 03-05 [CodeCraft-20 (Div. 2)]- E. Team Building (状压DP) 03-04 [Ozon Tech Challenge 2020 (Div.1 + Div.2, Rated]-E. Kuroni and the Score Distribution(构造) 03-04 [Ozon Tech Challenge 2020 (Div.1 + Div.2, Rated]-D. Kuroni and the Celebration(交互题+树的性质) 03-03 [AtCoder Beginner Contest 151] -E - Max-Min Sums(预处理组合数学,贡献) 03-01 牛客练习赛58 F-XOR TREE(结论+树链剖分+线段树) 来自专栏 03-01 牛客练习赛58 F-XOR TREE(结论+树链剖分+线段树) 02-27 AtCoder Beginner Contest 152 - F - Tree and Constraints (容斥定理+树上路径的性质) 02-24 [Codeforces Round #622 (Div. 2)] - C2. Skyscrapers (hard version) (单调栈) 02-22 2018牛客国庆集训派对Day1 D-Love Live! (01字典数+树上启发式合并/静态链分治) 02-17 [Codeforces Round #620 (Div. 2)] E. 1-Trees and Queries(树,LCA,奇偶性) 02-17 AtCoder Beginner Contest 155 - D - Pairs ,-E - Payment 题解 来自专栏 02-17 AtCoder Beginner Contest 155 - D - Pairs ,-E - Payment 题解 02-14 [Educational Codeforces Round 82 (Rated for Div. 2)] D. Fill The Bag (二进制拆分,贪心) 02-13 C++ 开3次方根方法 02-12 树状数组 进阶篇:区间修改,区间查询 来自专栏 02-12 树状数组 进阶篇:区间修改,区间查询 02-12 2020牛客寒假算法基础集训营4 H- 坐火车 (桶,树状数组) 02-10 2020牛客寒假算法基础集训营3 B-牛牛的DRB迷宫II (构造) 02-09 AtCoder Beginner Contest 063 - D - Widespread (二分答案) 02-07 2020牛客寒假算法基础集训营2 - J 求函数 (线段树) 02-05 [Codeforces Round #617 (Div. 3)] 题解 A,B,C,D,E1,E2,F 02-02 [Codeforces Round #611 (Div. 3)] C. Friends and Gifts (随机大法好) 02-02 [Codeforces Round #611 (Div. 3)] C. Friends and Gifts (随机大法好) 来自专栏 02-02 [Hello 2020] D. New Year and Conference (ST表,排序) 02-02 [Hello 2020] D. New Year and Conference (ST表,排序) 来自专栏 02-01 [Hello 2020] C. New Year and Permutation (组合数学) 02-01 [Hello 2020] C. New Year and Permutation (组合数学) 来自专栏 02-01 [Educational Codeforces Round 81 (Rated for Div. 2)]E. Permutation Separation(线段树,思维,前缀和) 02-01 [Educational Codeforces Round 81 (Rated for Div. 2)]E. Permutation Separation(线段树,思维,前缀和) 来自专栏 01-31 Educational Codeforces Round 81 (Rated for Div. 2)] D. Same GCDs (数论,因子分解,容斥定理) 01-31 Educational Codeforces Round 81 (Rated for Div. 2)] D. Same GCDs (数论,因子分解,容斥定理) 来自专栏 01-30 Educational Codeforces Round 81 (Rated for Div. 2) C. Obtain The String(序列自动机,贪心) 01-30 Educational Codeforces Round 81 (Rated for Div. 2) C. Obtain The String(序列自动机,贪心) 来自专栏 01-30 Educational Codeforces Round 81 B. Infinite Prefixes(数学,字符串,思维) 01-30 Educational Codeforces Round 81 B. Infinite Prefixes(数学,字符串,思维) 来自专栏 01-28 Codeforces Round #615 (Div. 3) F. Three Paths on a Tree(树的直径,dfs) 01-28 Codeforces Round #615 (Div. 3) F. Three Paths on a Tree(树的直径,dfs) 01-19 牛客挑战赛36 C 纸飞机(最小链覆盖,LIS+思维,详细题解) 01-19 牛客挑战赛36 C 纸飞机(最小链覆盖,LIS+思维,详细题解) 01-18 Codeforces Round #612 (Div. 2) C. Garland 动态规划 01-18 Codeforces Round #612 (Div. 2) D. Numbers on Tree 构造,树dfs 01-18 Codeforces Round #612 (Div. 2) D. Numbers on Tree 构造,树dfs 01-17 关于set/map 等容器对string类的时间性能指标对比 01-17 关于set/map 等容器对string类的时间性能指标对比 01-16 Educational Codeforces Round 80 (Rated for Div. 2) ABCDE 题解 01-16 Educational Codeforces Round 80 (Rated for Div. 2) ABCDE 题解
2019年(共774篇)