kdu_2

Rookie League

• Username: 5★kdu_2
• Country:  North Korea
• Student/Professional:Other
• CodeChef Pro Plan: No Active Plan. View Details

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Last 6 Months 2026 (Jan-Jun)2025 (Jul-Dec)2025 (Jan-Jun)

Rating Graph

No. of Contests Participated: 20

Current Ratings Graph Old Ratings Graph

2108 (-17)RatingProvisional
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Starters 230 (Rated till 5 star)(2026-03-18 22:00:00)

Global Rank:   64

Cheated in:   

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(2026-03-18 22:00:00)

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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 (3)

Machine Learning

14%

Operating System

5%

Time complexity

28%

Practice Paths (1)

Infosys InfyTQ - Questions

1%

Contests (20)

November Long 2022 Division 4 (Rated)

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

December Long 2022 Division 2 (Unrated)

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

Starters 80 Division 2 (Rated)

Permutation Subsequence, c8kbf and Tree, Prefix Permutation, Matrix Pain, Equal Elements

Starters 85 Division 1 (Rated till 6 stars)

Crazy Bishops on Chessboard, Efficient PAN Linking

Starters 86 Division 2 (Rated)

Largest Y, Maximise Score, Minimum Operation

Starters 88 Division 1 (Rated till 6 Stars)

Maximum And Or, Chef and Asteroids, Minimize the Bits, Chef and Good Array

Starters 118 Division 1 (Rated till 5-Stars)

Water buckets, Count Substrings, Join States, Is it uniquely decodable, Xorry 2, Xorry 1

Starters 119 Division 1 (Rated till 6-Stars)

K Odd Sum, Luxury Inflation, Unalike Gcd & Lcm, The Electrifying Problem

Starters 123 Division 1 (Rated till 6-Stars)

Minimum And Maximum I, Making Stars, Yet Another Alice Bob Game, Trial of the Conqueror, Minimum And Maximum II

Starters 129 Division 1 (Rated till 5-Stars)

Palindromic Substrings, SumXor, Red Blue Decomposition, ConstructXor

Starters 136 Division 1 ( Rated till 6-Stars )

Game On Rectangle, Lexicographically Maximal Prefix AND, Sum of Max K Subarray, Sum of Modes, Non-Zero XOR, Who Makes P1, Even Sum Subarray

Starters 144 Division 1 (Rated)

Largest K

Starters 180 (Rated till 6 star)

Huh, Easy

Starters 185 (Rated till 5 star)

Double Shuffle, GCD Summation, Asymmetric Cookies, Double Shuffle (Hard), Array Deletion Game, Range Maximum Deconstruction (Easy)

Starters 197 (Rated till 6 star)

Good Ranking (Pair)

Starters 203 (Rated)

Cab Rides, Maximum MST, MEX on Ranges, Set To Median

Starters 205 (Rated till 6 star)

Unreachable

Starters 206 (Rated)

Cyclic Shift Minimization, Min Steps, Gladiator Fighting, Prime Sum

Starters 207 (Rated)

Adjacent Sums, Subset MEX Counting, Make Subarray, Maximum Smaller

Starters 210 (Rated till 5-star)

Delete Sorted Subsequence, First Element Counting, Make All, Min Modular Subarray

Starters 212 (Rated till 6 star)

Interesting Binary (Easy Version), Distinct Fun, Counting MEX Is Fun, Binary Flip

Starters 230 (Rated till 5 star)

Sum of Second Max, A to B (Easy), Sets Diff by K

Total Problems Solved: 151