Nikunj Khokhar

Practice: 

Factorial, Small factorials, Ambiguous Permutations, Enormous Input Test, Turbo Sort, ATM, Life, the Universe, and Everything, The Lead Game, Cutting Recipes, Ciel and A-B Problem, Little Elephant and Candies, Ciel and Receipt, Coin Flip, Packaging Cupcakes, Three Different Numbers, Snape and Ladder, Sereja and Commands, Number Mirror, Magic Pairs, Chef and Remissness, Ups and Downs, Coprime Triples, The Smallest Pair, Lowest Common Ancestor, Tanu and Head-bob, Chef and Notebooks, The Army, XOR with Subset, Sereja and Salesman, Brackets, Good Joke!, Piece of cake, Version Control System, DONT GET WET, Devu and Grapes, Add Two Numbers, Find Remainder, First and Last Digit, Smallest Numbers of Notes, Sum of Digits, Reverse The Number, Helping Chef, Total Expenses, Id and Ship, Valid Triangles, Grade The Steel, GCD and LCM, Second Largest, Small Factorial, Primality Test, Finding Square Roots, The Block Game, Farmer And His Plot, Chef and Dolls, Chef and his Sequence, Rupsa and the Game, Cops and the Thief Devu, Churu and Balls, Count Subarrays, Chef and Two Strings, Greedy puppy, Chef and the Wildcard Matching, Minimum Maximum, Sum of palindromic numbers, Chef And Operators, Mahasena, Chef-Detective, Palindromic substrings, Chef and Subarrays, Devu and Perfume, Chef and Fruits, Malvika is peculiar about color of balloons, Chef and digits of a number, Puppy and Sum, Forest Gathering, Chef And Coloring, Movie Weekend, Coins And Triangle, Easy Numbers, Kitchen Timetable, Sticks, Chef and Inequality, Sherlock Counts Ways, Chef and his Students, Chef and Numbers, Extreme Encoding, Digit Longest Increasing Subsequences 2, Bear and Milky Cookies, Rainbow Graph, Safe Robot, Bear and Ladder, Bear and Segment 01, Snakes and transition from Capitalism to Socialism, Two Numbers, Chang and Bitwise OR, Whats in the Name, From heaven to earth, Little Chef and Sums, K Fibonnaci, Skiing, Chef And Easy Xor Queries, Pishty and Triangles, Survive in ChocoLand, Jumping in the hills, So Straight, Difficult Choice, Count Substrings, Permutation Composition Queries, No Minimum No Maximum, Prime divisors, Useful Number, Play Piano, Yet Again a Subarray Problem, Music Shopping, Doubly Increasing Path, Dream Problem, Sum and GCD, Birthday Gift Again, War in Treeland Again, Delete a Subarray, Two-lane Road, Hiring Chefs, Ice Cream Queue, Hidden Sequence, D-Or, Make It, Maximum Subsequence Sum, XOR Game, A Tree to Remember, Chef and Secret Recipe, Tower Counting, Inversions in Permutations, Dot Time, Chefland Squads and the Army Chief, D-Dimensional MST, Self-Destructing Strings, Efficient PAN Linking

February Challenge 2017: 

Chef and His Apartment Dues

March Challenge 2017: 

Xenny and Alternating Tasks, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix

April Challenge 2017: 

Dish Of Life, Bear and Row 01, Similar Dishes

May Challenge 2017: 

Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers

June Challenge 2017: 

A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets

August Long Challenge 2017: 

Chef and Rainbow Array, Chef and Mover, Palindromic Game, Greedy Candidates

September Challenge 2017: 

Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums

October Challenge 2017: 

Max Mex, Counter Test For CHEFSUM, A Balanced Contest

November Challenge 2017: 

Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes

December Challenge 2017: 

Total Diamonds, Chef And his Cake, Penalty Shoot-out, Chef and Hamming Distance of arrays

June Cook-Off 2017: 

Ada and crayons, SnackUp

September Cook-Off 2017: 

Statistics Construction, Subsequence Equality

October Cook-Off 2017: 

Chef and Counting Test, Chef and Employment Test, Chef and Weird Queries

November Cook-Off 2017: 

Online Chess, Random Pair

December Cook-Off 2017: 

Beautiful Array, Football Match

May Lunchtime 2017: 

Prefix Inversions

July Lunchtime 2017: 

Find the Maximum Value

October Lunchtime 2017: 

Buggy Calculator, Maximum Number

November Lunchtime 2017: 

Smart Strategy

December Lunchtime 2017: 

Days in Month, Strange Function

January Challenge 2018: 

K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers

International Coding Challenge | Techfest, IIT Bombay: 

Save the Trees , Adventures of Nova

January Lunchtime 2018: 

Chef and Game with Sequence, Chef and Escaping from the Labyrinth

February Challenge 2018: 

Broken Clock, Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome

February Cook-Off 2018: 

Chef and Cook-Off, Chef and Tuples, Chef and Line

March Challenge 2018 DIV 1: 

Chef and Easy Problem, Chef and Gcd Queries, Mix the Colors, Minions and Voting

March Cook-off 2018 Division 1: 

Chef Goes to the Cinema, Chef Restores a Matrix

April Cook-off 2018 Division 1: 

Binary Nim

May Cook-off 2018 Division 2: 

Best Cake Ever, Secret Recipe

August Cook-Off 2018 Division 1: 

GukiZ and Candies, Mixi Game

December Cook-Off 2018 Division 1: 

Yalalovichik Numbers, Yalalovichik Strings

March Lunchtime 2018 Division 1 (Unrated): 

Partitions, Chef and Friends, Three Integers, Magic Elements

April Lunchtime 2018 Division 1: 

The hardest gcd problem

May Lunchtime 2018 Division 1: 

Count Substrings, Shifted Palindrome, Maximum Plus

April Challenge 2018 Division 1: 

Chef and Array (Challenge), Cutting Plants, Highway Crossing, Count Good Prefixes

May Challenge 2018 Division 2: 

Mighty Friend, Change the Signs, Minimum Deletions, Xor Again, Fake Binary Search, Dibs on Fibs

August Challenge 2018 Division 1: 

Coordinate Compression , Modular GCD, Interactive Matrix, Lonely Cycles

June Lunchtime 2018 Division 1: 

Sort the Leaves, Summary Power

July Lunchtime 2018 Division 1: 

Forced Particles

August Lunchtime 2018 Division 1: 

Chef and Eid, Mix Mix Game, GukiZ Has More Candies

October Lunchtime 2018 Division 1: 

Coloring the Grid, Weird Question

January Challenge 2019 Division 1: 

Yet Another Problem About Sequences, Different Neighbours, Partition the Graph, Distinct Pairs, Party, A Pizza Slice

February Cook-Off 2019 Division 1: 

Max Range Queries, Chef and Secret Password, Chef and Party

March Cook-Off 2019 Division 1: 

XOR N-bonacci Sequence, Markers and Caps

April Challenge 2019 Division 1: 

Offer for Chef

April Cook-Off 2019 Division 1: 

Doubly Increasing Path, Random Game, Pied Piper vs Hooli

April Lunchtime 2019 Division 1: 

Firdavs and Planet F, Minimum Sum

August Lunchtime 2019 Division 1: 

Destroy Cells, Chef Does Coke Yet Again

September Mega Cook-Off 2019 Division 1: 

Angry Grandfather, Fitness Exercises

September Lunchtime 2019 Division 1: 

All Substrings, Treeversion, Find the Sum

October Challenge 2019 Division 1: 

Even Edges, Bacterial Reproduction, Chef and Maximum Star Value, Array Modification, (Challenge) Maximizing LIS

November Lunchtime 2019 Division 1: 

Planting Trees, Washing Windows, Perfection

December Cook-Off 2019 Division 1: 

Xor It

February Challenge 2020 Division 1: 

Chef and Railway Stations, Expected Change, No Change Required, Chef and Gordon Ramsay 2, (Challenge) Raisins, Long Contest and Cook Off Overlaps

March Cook-Off 2020 Division 1 : 

Mysterious Sequence, Maximize Letter Beauty, Random Chocolates, Escape the Tree

April Cook-Off 2020 Division 1 : 

Simple Operations

May Cook-Off 2020 Division 1: 

Chef, Chefina and Their Friendship, Chefina on a Trip, Roads in Chefland

March Lunchtime 2020 Division 1 (Unrated): 

Maximize LCM, Strip in a Tree!

April Lunchtime 2020 Division 1: 

Dot Time, Triangle Query, Positive Mex

May Lunchtime 2020 Division 1: 

Absolute Min Max, Escape One, Convert the String, Tree difference

August Lunchtime 2020 Division 1: 

Game on a Strip, Counting Graphs, Alien Invasion

December Challenge 2020 Division 1: 

Hail XOR, Calculus, String Operations, Positive Prefixes, Even Pair Sum

October Cook-Off 2020 Division 1: 

Path-etic Sums, Yet Another Crossover Episode

October Lunchtime 2020 Division 1: 

Chef Likes Good Sequences, Chef Is Just Throwing Random Words, Cute Chef Gift

May Challenge 2021 Division 1 (Unrated): 

Valid Paths

SnackDown 2021 - Online Qualifiers: 

Lucky Number

October Challenge 2021 Division 1 (Unrated): 

Longest AND Subarray, MEX-OR

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