Date Name Tags
yesterday
k-Amazing Numbers data structures binary search implementation two pointers
Sept. 19, 2020
Sage's Birthday (hard version) binary search sortings greedy two pointers brute force constructive algorithms
Sept. 14, 2020
Equal Product two pointers data structures math number theory
Sept. 14, 2020
Three Occurrences hashing two pointers data structures probabilities
Sept. 8, 2020
Chocolate Bunny interactive math constructive algorithms two pointers
Sept. 6, 2020
Fixed Point Removal data structures binary search greedy two pointers constructive algorithms
Sept. 4, 2020
Two Platforms two pointers dp sortings binary search
Aug. 30, 2020
Rainbow Rectangles data structures two pointers sortings
Aug. 28, 2020
The Potion of Great Power *special binary search data structures graphs interactive sortings two pointers 2-sat
Aug. 25, 2020
Zigzags two pointers data structures math brute force combinatorics
Aug. 25, 2020
Mercenaries bitmasks combinatorics two pointers math brute force dsu dp
Aug. 14, 2020
Controversial Rounds dp two pointers binary search data structures greedy
Aug. 12, 2020
Boboniu Chats with Du dp greedy two pointers sortings
Aug. 7, 2020
Twilight and Ancient Scroll (harder version) dp implementation strings string suffix structures hashing two pointers
Aug. 5, 2020
Boats Competition brute force two pointers greedy
Aug. 5, 2020
Weights Division (hard version) dfs and similar greedy trees two pointers binary search sortings
July 29, 2020
Good String brute force dp greedy two pointers
July 24, 2020
String Transformation 1 graphs trees greedy dsu sortings strings two pointers
July 21, 2020
Prefix Flip (Hard Version) constructive algorithms data structures strings two pointers implementation
July 21, 2020
Mastermind constructive algorithms greedy implementation sortings graph matchings two pointers
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 19, 2020
New Passenger Trams sortings brute force data structures two pointers binary search
July 12, 2020
D. Berserk And Fireball greedy math implementation two pointers constructive algorithms
July 11, 2020
Omkar and Last Floor dp two pointers greedy
June 28, 2020
D. Zero Remainder Array math sortings two pointers
June 28, 2020
E2. Reading Books (hard version) greedy sortings data structures two pointers implementation ternary search
June 23, 2020
C. RationalLee greedy math sortings two pointers
June 16, 2020
F1. Flying Sort (Easy Version) two pointers
June 16, 2020
F2. Flying Sort (Hard Version) two pointers
June 13, 2020
A. XXXXX two pointers
June 13, 2020
B. Most socially-distanced subsequence two pointers
June 11, 2020
B. Shuffle two pointers
June 11, 2020
E. Two Arrays combinatorics two pointers
May 17, 2020
B. Ternary String two pointers
May 16, 2020
C. Count Triangles two pointers
May 9, 2020
E. Special Elements two pointers
April 26, 2020
D. Multiple Testcases two pointers
April 21, 2020
C. Alternating Subsequence two pointers
April 21, 2020
D. Constant Palindrome Sum two pointers
April 15, 2020
B. Xenia and Colorful Gems two pointers
April 13, 2020
E1. Three Blocks Palindrome (easy version) two pointers
April 13, 2020
E2. Three Blocks Palindrome (hard version) two pointers
April 8, 2020
C. Eugene and an array two pointers
April 8, 2020
F. Kate and imperfection two pointers
March 23, 2020
F. AND Segments bitmasks combinatorics two pointers
March 19, 2020
E. Bombs two pointers
March 12, 2020
D. Pair of Topics two pointers
March 9, 2020
F. Attack on Red Kingdom games two pointers
March 3, 2020
B. Kuroni and Simple Strings two pointers
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