kim jong chol

Practice: 

The Turing Music Box, Parenthesis, Dynamic GCD, Little Elephant and CNSes, Music & Lyrics, Subset Sum, Prime Distance On Tree, Query on a tree VI, Lucky Four, MasterChef, Chef and Bitwise OR Operation, Chef and Tennis, (Challenge) Chef and Palindromes, Chef and cities, Invisible Plane, Evaluate the polynomial, Irrational Root, Sticks, Two Coins, Shooting on the array, Santa Delivering Problem, Pishty and Triangles, Chef and Interval Painting, Chef Cuts Tree, OR Matrix, Finding Second Maximum, Chef and Queries on a Tree, Chef and GCD Game , Forced Particles, GCD Sum, Make a String, MEX and Ranges, Prime divisors, GukiZ and Candies, Mixi Game, Hack Fulu, Standard Tree Task, Chef and Eid, Mix Mix Game, X and Two Groups, GukiZ Has More Candies, Binary Nim 2, Power Tree, Biased Judgement, Match the Streams, Coin Partition, Pumping Water, Ada Bishop

June Challenge 2015: 

Sereja and Matrix Division, Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons, Another Fibonacci, Anticommutative implication, Chef and String, Chefbook, Connect Points

July Challenge 2015: 

Addition and Multiplication, Maximum Difference Walk, Sereja and Game 2, Bread, A game on a graph, MasterChef, Na2a and lucky stone, Chef and Cube, Rohith and Circles, Easy exam

November Challenge 2015: 

Nikitosh and Sauron-tetrahedron, Ingredients, Receipt Recovery, Chef and collection of stamps, Eugene and function, Simple Sum, Chef and cakes, Period on tree, Scrabble on a Graph, Decompose the Tree

December Challenge 2015: 

Sereja and Dividing, Chef and cinema, Chef and the stones, Plane Division, Oracle Devu and Longest Common Subsequence, Misha and Permutation, Chef and Filters, Chef and Girls, Trip and Palindromes, Tanks

June Cook-Off 2015: 

Ankit, Srijan and a game of stone piles, Bored of Nim, VS and his marking scheme, Longest non regular parentheses sub-sequence, Strange operations

March Challenge 2016: 

Sereja and Two Strings 2, Polygon & Circles, Chef And Hungry Birds, Palindromic substrings, Floor Distribution, Chef and Number Guessing, maximize the sum, Parity tree, Chef And Special Dishes, Tiptoe through the tulips

April Challenge 2016: 

Help Watson Escape, Fibonacci Queries, Chef and Ballons, Devu and good strings, Chef And Magical Path, Chef And Coloring

October Challenge 2016: 

Sereja and Progressions

March Cook-Off 2016: 

Not even planar, Digital clock, Dual Nim, Alternating subarray prefix, The potato problem

March Lunchtime 2016: 

Two Closest, Arrays Sum, Simple Statistics, ABABAABA

April Lunchtime 2016: 

Maximum K Sums, Coins And Triangle

Past ZCO Problems: 

Tournament, Smart Phone

Codiyapa: 

Game created out of Boredom, chalks and box, Number that matters, Game of dots, Courses and Credits, The game of childhood, Priya,s Birthday, Raju and his Trees, Raju and his safes, clues for pappu

ITerate: 

BROKEN HEART, TRICKY BALLS, SHARP SWORD, ANTIDOTE, ALICE INTERVIEW

March LoC Competitive Programming Marathon: 

Fear of Rectangles, Birthday Treat, Mod in an Array, Very Simple Question, Play with Roses, Chef Notani and Repetition, Fraction

Alkhwarizm 2016: 

Ilya and Sleep disorder, Vasya And Vanya Reunite

KJSCE Coding Challenge: 

Probability, Factors and Factorials

SRM Codejam [Qualifiers]: 

Introductory Problem, Help Sumit, Vipul - The Bracket Checker, Simple Multiplication

Recursion Junior Challenge-II : 

Gargi and Strings, The Whim of Mr Doraemon, Friends with Strings, Siddhu Prime Numbers, Abhi and The Monster

CodeWORM : 

COUNT, Pay the Debts, BookWorm, Update, Wayout

March Cook-Off 2017: 

Rainbow Graph, Yet Another Card Game, Safe Robot

July Cook-Off 2017: 

Chang and Bitwise OR, Chang and the Perfect Function, Chang and Perfect Quadruples, Chang and Beautiful Sequences, Bipartite Graph from Trees

Abacus'17 - OLPC: 

Geek Sundaram and his Idly Vada, Geek Sundaram in AlgoLand

TSEC Codeathon: 

Chef and the Balanced Array, String Composition, The height issue, Project Pairings, Chef and his device, Rod costs

LoC Aug 2017: 

Princess and Beauty , Tree GCD , Poo Poo , Abhijeet loses sleep, Always Late

GST January SRM: 

Easy Navigation

Insomnia 2018 (Rated): 

Correct Bracket Sequence, So Straight, Count Nodes, Split Sums, A Game of Game, DP Made Easy, Strange Swaps, Function Function

April Lunchtime 2019 Division 1: 

Dream Problem, Firdavs and Planet F, Minimum Sum, Chef Rami and Inventions

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

October Challenge 2021 Division 1 (Unrated): 

Chef at the Olympics, Longest AND Subarray, Digit Removal, MEX-OR, Yet another MEX problem, Characteristic Polynomial Verification, Hidden Points

November Challenge 2021 Division 1 (Unrated): 

Flip or Compress, Functional Array, Wildcard Replacement, Xor Equation, Weird Palindrome Making, Hill Sequence, Maximise the bridges, Convex Hulk

December Challenge 2021 Division 1 (Unrated): 

Increasing String , Yet Another Tree Problem, Valleys and Hills, Rock Paper Scissors, Pyramid Traversal, Min Manhattan Distance, Squares Counting

August Long 2023 Division 1 (Unrated): 

Codechef Copy, Spiritual Chef, All New CodeChef, Maximum Deliciousness, I Can Use Both Hands!

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