Ankush Khanna

January Challenge 2018

Rectangle

February Challenge 2018

Chef And His Characters, Chef And The Patents, Permutation and Palindrome

February Cook-Off 2018

Chef and Cook-Off

February Lunchtime 2018

Jumping in the hills

March Challenge 2018 DIV 2

Chef and Easy Problem, A Big Sale, Mix the Colors, Chef and Glove, Minions and Voting, Minion Chef and Bananas

March Cook-off 2018 Division 2

Chef Goes to the Cinema, Chef Restores a Matrix, Chef Judges a Competition

April Cook-off 2018 Division 2

Cut the Board, Binary Nim

August Cook-Off 2018 Division 2

Mixi Game

September Mega Cook-Off 2018 Division 2

ATM Machine, Make a Permutation

November Cook-Off 2018 Division 1

Beautiful Garland

March Lunchtime 2018 Division 2 (Unrated)

Chef and Friends, Three Integers, Magic Elements

April Lunchtime 2018 Division 2

Two vs Ten, The hardest gcd problem

April Challenge 2018 Division 2

Chef and Array (Challenge), Weight of Numbers, Highway Crossing, Count Good Prefixes, Average of Pairs, Workers

May Challenge 2018 Division 2

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

June Challenge 2018 Division 1

Vision

July Challenge 2018 Division 2

Magic Set, Strike or Spare

August Challenge 2018 Division 2

Modular GCD, Problem Sort, Sheokand and Number, Spell Bob

September Challenge 2018 Division 2

Magician versus Chef, War of XORs, Chef and Condition Zero (Challenge), Chef and Adventures, Bad Shuffle

December Challenge 2018 Division 1

(Challenge) Delete DAG, Max and Electrical Panel, Chef and Interactive XOR

October Challenge 2018 Division 1

Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard

June Lunchtime 2018 Division 1

Summary Power

August Lunchtime 2018 Division 2

Chef and Problem Setting, Chef and Eid

September Lunchtime 2018 Division 2

Judging Delay, Opposite Cites, Chef Restaurant

October Lunchtime 2018 Division 1

Coloring the Grid, Weird Question

December Lunchtime 2018 Division 1

Choosing from Buckets, Age Calculator

January Challenge 2019 Division 1

Yet Another Problem About Sequences, Different Neighbours, Distinct Pairs, (Challenge) Chef and Matching Game, A Pizza Slice

February Challenge 2019 Division 1

Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, (Challenge) Chef with Orchestra in the Kitchen, Art of Balance

February Cook-Off 2019 Division 1

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

February Lunchtime 2019 Division 1

The Tricky Deal

August Challenge 2019 Division 1

Guddu and his Mother, Dilemma, Football, Distribute Apples, Zombie and the Caves

September Challenge 2019 Division 1

Chef and Good Subsequences, Easy Fibonacci, Chef Designed a Network, Chef and Interesting Subsequences

September Lunchtime 2019 Division 1

Find the Sum

October Challenge 2019 Division 2

Even Edges, Missing Number, Chef and Maximum Star Value, Array Modification, (Challenge) Maximizing LIS, Operations on a Matrix, Phone Prices

October Lunchtime 2019 Division 1 (Unrated)

Box Game

November Challenge 2019 Division 1

Physical Exercise, From Zero to Infinity, (Challenge) Coloring Triangulations

December Challenge 2019 Division 1

Chefina and Ranges, Plus Multiply, Binary XOR, Easy Subsequence Selection, Sticky Notes, Test Generation, (Challenge) Cubical Virus, That Is My Score!, Addition

February Challenge 2020 Division 1

No Change Required, The Theatre Problem, School of Geometry, Hard Cash

April Cook-Off 2020 Division 1

Simple Operations

February Lunchtime 2020 Division 1

Swapping to Palindrome

April Lunchtime 2020 Division 1

Positive Mex

Exun Programming Prelims 2019 (Rated for all)

Weird Modulo Problem , Tennis Tournament

UWCOI 2020 (Rated for all)

Button Pairs, Find maximum in an Array

July Cook-Off 2020 Division 1

Even-tual Reduction, OR-thodox Distinction

July Lunchtime 2020 Division 1

Binary Concatenation

August Lunchtime 2020 Division 1

Game on a Strip, Alien Invasion

June Cook-Off 2020 Division 1

Per Capita Income

June Lunchtime 2020 Division 1

Maximum AND

RECode 12.0 (Rated for all)

Chef and String, Chef and Walk, Chef and Rotation, Chef and Numbers

December Lunchtime 2020 Division 1 (Unrated)

Three Letters, One Zero Swaps

October Lunchtime 2020 Division 1

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

Coders' Legacy (Rated for all)

Chef vs Doof, Doof on Cartesian, Doof fires Brackets

September Cook-Off 2020 Division 1

Maximise Subsequence Value

September Lunchtime 2020 Division 1

Root the Tree, Robot Detector

CodeChef Starters 9 Division 1 (Unrated)

Black cells in a chessboard, Large Square, Bus full of passengers, India Fights Corona

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements

CodeChef Starters 13 Division 1 (Unrated)

Add and Divide, Chef in Vaccination Queue, Maximum Light Up, The Preparations, Magical Doors

SnackDown 2021 - Online Round 1A

Round Robin Ranks , Dance Moves, Min Max LCM

SnackDown 2021 - Online Round 1B

Queens Placement , Largest Laddu, Help Nishant

February Long 2022 - I, Division 1 (Unrated)

Binary Base Basics, N Queens Puzzle Solved !, Chef and the Hair Salon

Starters 75 Division 2 (Rated)

Equal Hamming Distance, Prefix Ones, Three Powers of Two

Starters 76 Division 2 (Rated)

Make Array Odd, Zero String, Expected Value, Construct Array, Not Divisible

Starters 77 Division 2 (Rated)

Concat Palindrome, Three Numbers

Starters 78 Division 2 (Rated)

Bitwise Equation, Valid Expression, Solve More Problems!

Starters 80 Division 2 (Rated)

Permutation Subsequence, Prefix Permutation, Equal Elements

Starters 81 Division 2 (Unrated)

Divide Pages

Starters 82 Division 2 (Rated)

Make Them Alike, Find eX, Make A-B Same, Difference Matrix, MIN To MAX

Starters 83 Division 2 (Rated)

Construct String, Order by XOR

Starters 116 Division 2 (Rated)

Chef Product, ORST , Access Control

Starters 117 Division 2 (Rated)

Not Prime Permutation, Spell Shortening

Starters 118 Division 2 (Rated)

Subset GCD, Join States, Xorry 2, Xorry 1

Starters 119 Division 2 (Rated)

Cookie Day, Another Good String , K Odd Sum

Starters 120 Division 2 (Rated)

Find Permutation , Count Subarrays, Count Arrays, Sub or Swp

Starters 121 Division 2 (Rated)

Frequal, Caesar Cipher Lite, Anti Adjacent Swaps

Starters 123 Division 2 (Rated)

Maximise Adjacent Sum, Check Adjacent Sum, Minimum And Maximum I, Minimum And Maximum II

Starters 124 Division 2 (Rated)

Binary Parity, Table Strength, Swap and Unite, Make It One

Starters 125 Division 2 (Rated)

Fake Certificate, Binary Minimal

Starters 137 Division 2 (Rated)

Double Trouble, Large Differences

Starters 138 Division 2 (Rated)

A power B mod C , Prefix Suffix Inequality, Long Drive, Distinct Substring

Problems Authored (16)

Problems Tested (16)

Editorials Contributed (16)