kdu_9

Bronze League

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

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No. of Contests Participated: 17

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Starters 216 (Rated till 5 star)(2025-12-10 22:00:00)

Global Rank:   4

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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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(2022-12-20 00:00:00)

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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 (17)

November Long 2022 Division 4 (Rated)

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

December Long 2022 Division 2 (Unrated)

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

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)

TripTastic, Tree Xor, Crazy Bishops on Chessboard, 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, Random Coloring, How many arrays, Make It One

Starters 125 Division 1 (Rated till 6-Stars)

Bucket Game, Manhattan Xor, Binary Minimal

Starters 126 Division 1 (Rated till 6 Stars)

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

Starters 139 Division 1 (Rated till 5-Stars)

Sort Perm, Sum of N, Destroying Bridges Part 2

Starters 140 Division 1 (Rated till 5-Stars)

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

Starters 144 Division 1 (Rated)

Largest K

Starters 146 Division 1 (Rated till 5 stars)

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

Starters 188 (Rated till 6 star)

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

Starters 191 (Rated till 6 star)

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

Starters 197 (Rated till 6 star)

Split

Starters 203 (Rated till 5 star)

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

Starters 208 (Rated till 6 star)

GCND

Starters 216 (Rated till 5 star)

Permutation Filling, LIS and LDS, Minimum Same Difference, Tree Subsets, XOR Equal Subtract

Total Problems Solved: 360