Date Name Tags
Sept. 19, 2020
Rain of Fire binary search graphs dsu dfs and similar implementation data structures
Sept. 12, 2020
Link Cut Centroids dfs and similar graphs constructive algorithms trees
Sept. 8, 2020
Egor in the Republic of Dagestan constructive algorithms dp graphs shortest paths greedy dfs and similar
Sept. 6, 2020
Tree Tag dfs and similar dp games trees
Sept. 6, 2020
Game of Pairs interactive math constructive algorithms dfs and similar number theory
Sept. 6, 2020
Tree Tag dfs and similar dp games trees constructive algorithms strings
Aug. 30, 2020
Distance Matching constructive algorithms dfs and similar trees
Aug. 28, 2020
Spring cleaning *special data structures dfs and similar graphs trees
Aug. 26, 2020
Star Trek *special combinatorics dfs and similar dp games graphs trees matrices
Aug. 25, 2020
x-prime Substrings dp strings string suffix structures brute force dfs and similar
Aug. 21, 2020
Maximum Distributed Tree greedy number theory sortings trees dfs and similar dp implementation math
Aug. 16, 2020
Circumference of a Tree dfs and similar trees
Aug. 16, 2020
Dynamic Diameter dfs and similar trees
Aug. 16, 2020
Omkar and Pies bitmasks math dp dfs and similar shortest paths
Aug. 12, 2020
Boboniu Walks on Graph graphs brute force hashing dfs and similar
Aug. 9, 2020
Pairs of Pairs constructive algorithms dfs and similar graphs trees greedy
Aug. 7, 2020
Rarity and New Dress dp implementation dfs and similar shortest paths
Aug. 5, 2020
Weights Division (easy version) dfs and similar greedy trees data structures
Aug. 5, 2020
Weights Division (hard version) dfs and similar greedy trees two pointers binary search sortings
July 30, 2020
Uncle Bogdan and Country Happiness trees greedy dfs and similar math
July 30, 2020
Captain Flint and Treasure graphs greedy dfs and similar trees implementation data structures
July 29, 2020
Directing Edges graphs trees dfs and similar dp
July 24, 2020
String Transformation 1 graphs trees dfs and similar dsu sortings greedy
July 23, 2020
Graph *special dfs and similar dp math binary search ternary search
July 23, 2020
Village (Maximum) *special dfs and similar trees
July 21, 2020
The Majestic Brown Tree Snake dp greedy trees dfs and similar two pointers
July 19, 2020
Choosing flowers sortings binary search greedy two pointers brute force data structures dfs and similar dp
July 17, 2020
Directing Edges dfs and similar graphs constructive algorithms
July 17, 2020
Columns Swaps dfs and similar graphs dsu implementation 2-sat
July 4, 2020
G. Tree Modification trees dfs and similar constructive algorithms brute force graphs graph matchings
June 23, 2020
E. DeadLee data structures greedy implementation sortings dfs and similar
June 23, 2020
F. BareLee dp games dfs and similar
June 20, 2020
F1. The Hidden Pair (Easy Version) interactive shortest paths trees dfs and similar
June 20, 2020
F2. The Hidden Pair (Hard Version) interactive shortest paths trees dfs and similar
May 17, 2020
E. Graph Coloring dfs and similar
May 12, 2020
C. Orac and Game of Life dfs and similar shortest paths
May 9, 2020
F. Binary String Reconstruction dfs and similar
May 6, 2020
B. Monopole Magnets dfs and similar dsu
May 6, 2020
C. Quantifier Question dfs and similar
May 1, 2020
F. Phoenix and Memory dfs and similar
Feb. 29, 2020
F. Riana and Fiber Chatroom dfs and similar dsu sortings
Feb. 4, 2020
F. Berland Beauty dfs and similar sortings trees
Dec. 29, 2019
G. Subset with Zero Sum dfs and similar
Dec. 7, 2019
H. Hellcife is on fire dfs and similar
Dec. 7, 2019
J. Jingle Bells dfs and similar
Nov. 24, 2019
C. Arson In Berland Forest dfs and similar shortest paths
Sept. 23, 2019
B. Kamil and Making a Stream dfs and similar trees
Aug. 11, 2019
F. Graph Traveler dfs and similar
July 20, 2019
F1. Short Colorful Strip combinatorics dfs and similar
July 20, 2019
G. The Awesomest Vertex dfs and similar
more