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原创 G - Maximize Distance【ABC397】
G - Maximize Distance OMRON Corporation Programming Contest 2025 (AtCoder Beginner Contest 397)网络流 图论 二分答案 DINIC
2025-03-27 17:45:21
439
原创 E. Serval and Modulo【Codeforces Round 1011 (Div. 2)】
E. Serval and Modulo【Codeforces Round 1011 (Div. 2)】构造(constructive algorithms)数学(math)数论(number theory)
2025-03-25 04:00:00
795
原创 D. Serval and Kaitenzushi Buffet 【Codeforces Round 1011 (Div. 2)】
D. Serval and Kaitenzushi Buffet 【Codeforces Round 1011 (Div. 2)】数据结构(data structures)图匹配(graph matchings)贪心(greedy)
2025-03-24 19:37:42
663
原创 C . Serval and The Formula【Codeforces Round 1011 (Div. 2)】
【Codeforces Round 1011 (Div. 2)】C. Serval and The Formula 状态压缩(bitmasks)构造(constructive algorithms)贪心(greedy)
2025-03-24 19:28:39
965
原创 G. Game With Triangles: Season 2【Codeforces Round 1009 (Div. 3)】
Codeforces Round 1009 (Div. 3) G. Game With Triangles: Season 2动态规划(dp)计算几何(geometry)*2100
2025-03-22 13:53:08
934
原创 D. Equalization【Educational Codeforces Round 176 (Rated for Div. 2)】
Educational Codeforces Round 176 (Rated for Div. 2) D. Equalization状态压缩(bitmasks)暴力枚举(brute force)动态规划(dp)图论(graphs)贪心(greedy)数学(math)
2025-03-20 21:35:52
699
原创 E - Path Decomposition of a Tree【 ABC 397】
E - Path Decomposition of a Tree (AtCoder Beginner Contest 397) 树形dp 图论 dfs
2025-03-16 15:15:58
373
原创 F. Counting Necessary Nodes 【Codeforces Round 1009 (Div. 3)】
Codeforces Round 1009 (Div. 3) F. Counting Necessary Nodes状态压缩(bitmasks)分治(divide and conquer)计算几何(geometry)贪心(greedy)模拟(implementation)数学(math)
2025-03-13 16:54:20
413
原创 E. Finding OR Sum【Codeforces Round 1008 (Div. 2)】
E. Finding OR Sum【Codeforces Round 1008 (Div. 2)】 状态压缩(bitmasks)模拟(implementation)交互题(interactive)数学(math)
2025-03-11 19:35:08
358
原创 D1. Infinite Sequence (Easy Version) 【Codeforces Round 1007 (Div. 2)】
D1. Infinite Sequence (Easy Version) 【Codeforces Round 1007 (Div. 2)】状态压缩(bitmasks)暴力枚举(brute force)动态规划(dp)模拟(implementation)数学(math)
2025-03-09 16:19:21
1026
原创 G. Tree Destruction 【Codeforces Round 991 (Div. 3)】
Codeforces Round 991 (Div. 3) G. Tree DestructionDFS及其变种(dfs and similar)动态规划(dp)树形结构(trees)
2025-03-05 12:35:37
225
1
原创 E - Palindromic Shortest Path【ABC394】
E - Palindromic Shortest Path【ABC394】 BFS 图论 字符串
2025-02-22 22:40:35
315
原创 D. Graph and Graph 【Codeforces Round 1002 (Div. 2)】
Codeforces Round 1002 (Div. 2) D. Graph and Graph 数据结构(data structures)图论(graphs)贪心(greedy)最短路(shortest paths)
2025-02-21 19:48:01
845
原创 C. Beautiful Sequence + D. Palindrome Shuffle【Educational Codeforces Round 174 (Rated for Div. 2)】
Educational Codeforces Round 174 (Rated for Div. 2)
2025-02-19 23:49:26
894
原创 D. Object Identification 【Codeforces Round 1004 (Div. 2)】
Codeforces Round 1004 (Div. 2) D. Object Identification构造(constructive algorithms)图论(graphs)交互题(interactive)
2025-02-12 15:40:04
977
原创 E - Cables and Servers 【ABC 392】
Japan Registry Services (JPRS) Programming Contest 2025#1 (AtCoder Beginner Contest 392) E - Cables and Servers 并查集 图论
2025-02-11 21:58:13
866
原创 P11468 有向树
洛谷 P11468 有向树 https://www.luogu.com.cn/problem/P11468拓扑排序 树上dp
2025-01-29 23:14:16
737
原创 D. Unique Median【Codeforces Round 997 (Div. 2)】
Codeforces Round 997 (Div. 2)D. Unique Median二分(binary search)暴力枚举(brute force)组合数学(combinatorics)数据结构(data structures)分治(divide and conquer)动态规划(dp)
2025-01-27 18:44:57
667
原创 D. Shift + Esc【Codeforces Round 994 (Div. 2)】
Codeforces Round 994 (Div. 2) D. Shift + Esc 动态规划(dp)模拟(implementation)
2024-12-21 11:54:16
352
原创 G. Welcome to Join the Online Meeting!【CCPC2024哈尔滨站】
G. Welcome to Join the Online Meeting! 图论 BFS 最小生成树
2024-11-06 17:25:24
205
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