Yash Chandnani

May Challenge 2017

Chef and Sub Array , Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers, Chef and Subsequences

June Challenge 2017

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

July Challenge 2017

Chef and Sign Sequences, Pishty and tree, Tree Expectancy, Whats in the Name, Servers (Challenge), Calculator , IPC Trainers, Two Coins

August Long Challenge 2017

Chef and Rainbow Array, Chef and Mover, Hill Jumping, Palindromic Game, Greedy Candidates, Strings and Graphs

October Challenge 2017

Chef and Magic Arrays, Chef and a great voluntary Program, Chef and Cycled Cycles, Max Mex, Counter Test For CHEFSUM, A Balanced Contest

November Challenge 2017

Chef and Intersection Line, Product on the segment by modulo , Chef Hates Palindromes, Chef and Subarray Queries, Chef goes Left Right Left, Lovers Gift, Periodic Palindrome Construction, Villages and Tribes

December Challenge 2017

Chef and Direction, Chef and Universe, Total Diamonds, Santa Delivering Problem, Chef And his Cake, Chef And Easy Xor Queries, Penalty Shoot-out, Red and blue points, Chef and Hamming Distance of arrays

June Cook-Off 2017

Ada and crayons, SnackUp, Centeroid

September Cook-Off 2017

Infinite OR Game, Statistics Construction, Subsequence Equality

October Cook-Off 2017

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

November Cook-Off 2017

Skiing, Online Chess, Random Pair

December Cook-Off 2017

Minimum SubArray, Beautiful Array, Football Match

May Lunchtime 2017

Prefix Inversions

September Lunchtime 2017

Chef and Dice, Chef and Cook-Off Contests

December Lunchtime 2017

Days in Month, Strange Function, Too Much Sweetness

January Challenge 2018

(Challenge) Chef and Palindromes, Killing Monsters, A humongous Query, Simplify the Square Root, Killjee and k-th letter , K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers

February Challenge 2018

Broken Clock, Lucas Theorem, Chef And Land Labeling, Chef And His Characters, Chef And The Patents, Chef and odd queries, Points Inside A Polygon, Car-pal Tunnel, (Challenge) Biased Committee, Permutation and Palindrome

February Cook-Off 2018

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

February Lunchtime 2018

Game with numbers, Jumping in the hills

March Challenge 2018 DIV 1

Pishty and Triangles, Chef Cuts Tree, Chef and Easy Problem, Chef and Gcd Queries, Mix the Colors, Minions and Voting, Embedding a Tree (Challenge)

April Cook-off 2018 Division 1

Run Direction, Binary Nim

June Cook-Off 2018 Division 1

Masha and Minions, Sonya and Segments, Good Permutations

July Cook-Off 2018 Division 1

Sticks, OR Matrix, Chef and GCD Game

August Cook-Off 2018 Division 1

GukiZ and Candies, Mixi Game

May Lunchtime 2018 Division 1

Count Substrings, Shifted Palindrome, Weak in the Middle, Maximum Plus

April Challenge 2018 Division 1

Chef and Array (Challenge), Vaibhav and Ministers, Chef at the Food Fair, Cutting Plants, S Semi-palindromic, Highway Crossing, Chef and Same Old Recurrence, Count Good Prefixes, Chef and Same Old Recurrence 2

May Challenge 2018 Division 1

S-T Mincut, Series Sum, Change the Signs, Edges in Spanning Trees, Not a Convex Hull (Challenge), Fake Binary Search, Dibs on Fibs

June Challenge 2018 Division 1

Vision, Ways to Work, Expected Buildings

July Challenge 2018 Division 1

Tom and Jerry, Reach Equilibrium, Subway Ride, No Minimum No Maximum, Gears

August Challenge 2018 Division 1

Modular GCD

September Challenge 2018 Division 1

AND Square Subsegments, Selinas the Chefs Falling on the Tree, Sasha and Photos, Chef and Condition Zero (Challenge), Factorize, Table Game, Bad Shuffle

December Challenge 2018 Division 1

Colorblind Feast, Max and Electrical Panel, Directing Edges, Chef and Interactive XOR

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 1

Walk on Tree, Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard, Coprime Components, Distinct Rows in Submatrices

June Lunchtime 2018 Division 1

Sort the Leaves, Permutation Composition Queries, Summary Power

July Lunchtime 2018 Division 1

Prime divisors

September Lunchtime 2018 Division 1

Biased Judgement, Opposite Cites, Chef Restaurant

November Lunchtime 2018 Division 1

Useful Number, Median, Maximize It, Beats and Pieces

October Lunchtime 2018 Division 1

Robots Again, Coloring the Grid, Weird Question, Tree Walk, Niceness of the Arrays

Insomnia 2018 (Rated)

Correct Bracket Sequence, Count Nodes, Split Sums, Strange Swaps, Function Function

Code Melange (Rated)

XD Subsequences, Y Figures, Xorangements, CPI Crisis, Longest Constrained Subsequence, The Deadly Sin, Candy Love

Coders' Legacy 2018 (Rated)

Useless Clocks, Fibonacci String, Killing Zombies

Replay of Indian IOI Training Camp (IOITC) #1 (Rated)

Circular Intervals

Replay of Indian IOITC 2018 #2 (Rated)

Exact Walks, Coin Denominations

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

January Cook-Off 2019 Division 1

Ada School, Ada Pawns, Ada Function, Ada Matrix

January Lunchtime 2019 Division 1

Distances, Wanderer, Rooks

February Lunchtime 2019 Division 1

Roll the Bar, Families of Chefland, Create Permutation, The Tricky Deal, Chef Challenge

April Cook-Off 2019 Division 1

Doubly Increasing Path, Random Game, Pied Piper vs Hooli, Mystery Tree, Guess My Age

May Cook-Off 2019 Division 1

Misha and Nice Sets, Bitsetbaba and Power Grid, Expected Xor, Searching for a Biclique

June Challenge 2019 Division 1

Lent Money, Chef and Ingredients, Chef and His Dish, Intersecting Paths, Sum and GCD, Forgotten Tree 9

June Lunchtime 2019 Division 1

Fuzzy Conversions, The Grux Permutation , Gii and His Club, Igzi and Burly Array

July Challenge 2019 Division 1

Hit the Coconuts, Snake and Apple Tree, Guess the Prime!, Codechef War, LOVEMUFFIN, Maximum and Minimum, Circular Merging, (Challenge) Codechef War II

July Cook-Off 2019 Division 1

Birthday Gift Again, War in Treeland Again, Expected Product

August Challenge 2019 Division 1

Guddu and his Mother, Encoding, Tree Sequences, Dilemma, Maximize an Expression, Chef and Gordon Ramsay, Complement Spanning Trees

August Cook-Off 2019 Division 1

Warriors, Rich Substrings, Two Circles

September Mega Cook-Off 2019 Division 1

Save Jewels, Angry Grandfather, Hiring Chefs, Fitness Exercises

October Lunchtime 2019 Division 1 (Unrated)

Counting Inversions Again!, Double Distance Query, Box Game

November Cook-Off 2019 Division 1

The Biggest Restaurant, Expected Number of Customers , Black-and-White Tree, The Challenge Day, Robots in Chefland

January Challenge 2020 Division 1

Chef and Dynamo, Doraemon, Doofish Matrix, Chefina and Prefix Suffix Sums, English, Army of Me, Chefland Army, (Challenge) Building Anthills

January Cook-Off 2020 Division 1

Profitable Paths, Range AND, Chefina and Sums

February Cook-Off 2020 Division 1

Must Be Divisible, Maximum Subsequence Sum, XOR Game, Sweetest Candy , Chef and Pepperoni Pizza Again

March Cook-Off 2020 Division 1

Mysterious Sequence, A Tree to Remember, Maximize Letter Beauty, Random Chocolates, Escape the Tree

April Lunchtime 2020 Division 1

Dot Time, Xor Jar Muluk Tar, Triangle Query, Positive Mex

RECode 12.0 (Rated for all)

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

Problems Authored (1)

Problems Tested (0)

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Editorials Contributed (0)

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