Pak Il Song
Rookie League
- rns5
North Korea- Professional
- KimIlSung University
- No Active Plan. View Details
Submissions Heat Map
Learning Paths (7)
Machine Learning
Learn NumPy - Practice Problems and Challenges
Learn HTML / CSS
Learn Python for project building
Learn SQL
Hashing
Learn Java (Older version)
Practice Paths (5)
Python Projects for Beginners
2000 to 2500 difficulty problems
Practice Java
1800 to 2000 difficulty problems
500 to 1000 difficulty problems
Contests (13)
December Challenge 2018 Division 1
Before Having Donuts, (Challenge) Delete DAG, Colorblind Feast, Max and Electrical Panel, Directing Edges, Edge Addition, Chef and Interactive XOR, Chef and Working Plan
November Challenge 2018 Division 1
Chef and Recipes, Chef and Equations, Max-digit Tree, Appy Loves One, Good Median, Chef, Primes and Trees (Challenge), Magician versus Chef 2, Binary Strings
October Challenge 2018 Division 2
Walk on Tree, Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard, Coprime Components, Chef and Serves, Byte to Bit, Chef and Circles, Distinct Rows in Submatrices
September Lunchtime 2018 Division 2
Judging Delay, Biased Judgement, Opposite Cites, Chef Restaurant , Match the Streams
November Lunchtime 2018 Division 1
Useful Number, Median, Maximize It, Probability, Beats and Pieces
January Challenge 2019 Division 1
Yet Another Problem About Sequences, Different Neighbours, Partition the Graph, Distinct Pairs, Maximum Distance, Party, (Challenge) Chef and Matching Game, A Pizza Slice
February Challenge 2019 Division 1
Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Xor Decomposition, Yet Another Tree Problem, (Challenge) Chef with Orchestra in the Kitchen, Art of Balance, Maximize the Tax
April Lunchtime 2019 Division 1
Dream Problem, Firdavs and Planet F, Minimum Sum, Chef Rami and Inventions
October Challenge 2019 Division 1
Queries on Matrix, Even Edges, Bacterial Reproduction, Chef and Maximum Star Value, Array Modification, (Challenge) Maximizing LIS, Faulty System
May Challenge 2020 Division 1
Buying a New String, Triple Sort, Binary Land, Sorting Vases, Not a Real World Problem, Chef and Rainbow Road, Chef and Bitwise Product, (Challenge) Nanobots, Precise Pairing, Precise Bipartite Pairing
July Challenge 2020 Division 1
LCM Constraints, Chefina and Swaps, Easy Geo xD, Chef and Dragon Dens, Missing a Point, Doctor Chef, Weird Product, Expected Repetitions, Expected Spanning Trees, (Challenge) Dynamic Hull
August Challenge 2020 Division 1
Insanely Hard School Exams, Subsequence Frequency Counting, Precious Stones , Chefina and Strange Tree, Smallest KMP, Ants (Challenge) , Chef Thanos Wants Perfect Balance, Chef and Wedding Arrangements
November Challenge 2020 Division 1
Panic! at the Disco, Chef and the Combination Lock, Connect on a Grid (Challenge), Restore Sequence, Magical Candy Store, Selecting Edges, Red-Black Boolean Expression, Scalar Product Tree, Unusual Queries
July Challenge 2021 Division 1 (Unrated)
XxOoRr, Chef vs Bharat, Even Odd Partition, Optimal Denomination, Chef and Pairs, Madoka and Ladder Decomposition, Dakimakura Distribition, K Path Query
August Challenge 2021 Division 1 (Unrated)
Special Triplets, Array Filling, Geometry 1, Chef and Bulb Invention, Alternating LG Queries, Charge Scheduling, Chef and Digits of Large Numbers, Fat Hut, Problem Difficulties, Olympics Ranking
September Challenge 2021 Division 1 (Unrated)
XOR Equal, Shuffling Parities, Minimize Digit Sum, Treasure Hunt, 2-D Point Meeting, Airline Restrictions, Travel Pass, Covaxin vs Covishield, Minimum Digit Sum 2