kdu_9

• Username: 5★kdu_9
• Country:  North Korea
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Last 6 Months 2025 (Jul-Dec)2025 (Jan-Jun)2024 (Jul-Dec)2024 (Jan-Jun)

Rating Graph

No. of Contests Participated: 16

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Starters 211 (Rated till 6 - star)(2025-11-05 22:00:00)

Global Rank:   135

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November Long 2022 Division 4 (Rated)(2022-12-20 00:00:00)

Global Rank:   1

Cheated in:   

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Learning Paths (2)

Beginner DSA in Python

38%

Problem solving in Python

64%

Practice Paths (2)

2000 to 2500 difficulty problems

2%

Practice C++

9%

Contests (16)

November Long 2022 Division 4 (Rated)

Minimize swaps, MaxEdges, String Game, Water Mixing, Time Complexity, Spliting Balls, Split and Maximize, Alice and the Array

December Long 2022 Division 2 (Unrated)

Maximise XOR, Gcd of Subarrays, Divisible by A_i, Sum of Cube , Break into Powers, Not Divisible, Counting Subsequences

Starters 80 Division 2 (Rated)

Permutation Subsequence, Three-People Contests, c8kbf and Tree, Prefix Permutation, Matrix Pain, Equal Elements

Starters 85 Division 1 (Rated till 6 stars)

Crazy Bishops on Chessboard, TripTastic, Tree Xor, Efficient PAN Linking

Starters 88 Division 1 (Rated till 6 Stars)

Maximum And Or, Chef and Asteroids

Starters 90 Division 2 (Rated)

Crushed Apples and a Balance Scale, Minimum Ugliness, Sum of Goodness, Printing Binary Array, Anti Palindrome

Starters 124 Division 1 (Rated till 5-Stars)

Swap and Unite, Make It One, How many arrays, Random Coloring

Starters 125 Division 1 (Rated till 6-Stars)

Binary Minimal, Bucket Game, Manhattan Xor

Starters 126 Division 1 (Rated till 6 Stars)

Tree Distance Set, Freedom, Uncommon Cycles, LCD, Triangular Swaps

Starters 139 Division 1 (Rated till 5-Stars)

Destroying Bridges Part 2, Sum of N, Sort Perm

Starters 140 Division 1 (Rated till 5-Stars)

Lucky Matrix, Split Permutation, Trick Or Treat, Break The String, Tree Removal

Starters 144 Division 1 (Rated)

Largest K

Starters 146 Division 1 (Rated till 5 stars)

Binary Strings Yet Again, Permutation Construction, Connect The Chains, Back Front, Bouncing Ball

Starters 188 (Rated till 6 star)

GCD and XOR 2 (Easy), GCD and XOR 2 (Hard), Swaps in a String, K Boxes, Inversion Queries, Yet Another Monsters Problem

Starters 191 (Rated till 6 star)

Coloured Array, Permuted Greater than 2, Grid Path (Hard), Grid Path (Easy), Add 1 or 2, XOR Shortest Path

Starters 197 (Rated till 6 star)

Split

Starters 203 (Rated till 5 star)

Maximum Score Subarray, Subsequences of Subsequences, MEX on Ranges, Set To Median, Maximum MST

Starters 208 (Rated till 6 star)

GCND

Total Problems Solved: 355