Coder
- coder1728
India- Student
- Delhi Public School, Dwarka
- No Active Plan. View Details
Submissions Heat Map
Learning Paths (0)
Practice Paths (1)
Contests (119)
December Challenge 2019 Division 2
Plus Multiply, Easy Subsequence Selection, That Is My Score!
December Cook-Off 2019 Division 2
Change It
December Lunchtime 2019 Division 2
Check Algorithm
January Challenge 2020 Division 2
Chef and Dynamo, Breaking Bricks
February Challenge 2020 Division 2
School of Geometry
April Challenge 2020 Division 2
Strange Number, Squared Subsequences, Sell All the Cars, COVID Pandemic and Long Queue
May Challenge 2020 Division 2
Coronavirus Spread, Isolation Centers
April Cook-Off 2020 Division 2
Lift Requests
April Lunchtime 2020 Division 2
Another Birthday Present!, Chef in Fantasy League
May Lunchtime 2020 Division 2
Weird Walk, Lost Weekends
June Challenge 2020 Division 2
Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Covid Sampling (Challenge), Chef and String, Chef and Price Control
July Challenge 2020 Division 2
Ada King, Chefina and Swaps, Missing a Point, Chef and Card Game, Chef and Strings
July Cook-Off 2020 Division 2
Even-tual Reduction, OR-thodox Distinction
July Lunchtime 2020 Division 2
Chef and Steps, Maximum Candies, Binary Concatenation
June Cook-Off 2020 Division 2
Cache Hits, Max Mex
June Lunchtime 2020 Division 2
Maximum AND, Chef and Demonetisation, Increasing Decreasing
RECode 12.0 (Rated for all)
Chef and String, Chef and Walk
January Lunchtime 2021 Division 2 (Unrated)
Even Differences, Even Sum
February Challenge 2021 Division 2
Frog Sort, Team Name, Prime Game, Maximise Function
February Lunchtime 2021 Division 2
Palpal Strings, Coprime Range
June Challenge 2021 Division 2 (Unrated)
Bitwise Tuples, Bella ciao, Summer Heat
June Cook-Off 2021 Division 2
The Wave
June Lunchtime 2021 Division 2
From Rational to Binary, False Number, Unpleasant Ones
July Challenge 2021 Division 2 (Unrated)
XxOoRr, Chef vs Bharat
July Cook-Off 2021 Division 2
XOR-ORED, Mod Equality
July Lunchtime 2021 Division 2
Beautiful Pairs
August Challenge 2021 Division 2 (Unrated)
Chef and Bulb Invention, Problem Difficulties, Olympics Ranking
August Lunchtime 2021 Division 2
K-th Maximum, Crossing Blocks, Just a Graph
CodeChef Starters 10 Division 2 (Rated)
Maximise the Subsequence Sum
December Challenge 2021 Division 2 (Unrated)
Valleys and Hills, List of Lists
December Cook-Off 2021 Division 2
Median Minimization, Destructive Nim, Two Rooks, Friends Meetup, Musical Chairs
December Lunchtime 2021 Division 2
Maximum Trio
CodeChef Starters 21 Division 2 (Rated)
Akash and Grid, And Or Union
Code Drive Division 2 (Rated)
Sum this up, Again XOR problem, Maximum Factors Problem, Count Number of Peaks
January Long 2022 - I, Division 2 (Unrated)
Prime in a binary string
January Cook-Off 2022 Division 2
Palindromes Not Allowed, Mean Maximization
March Long One 2022, Division 2 (Unrated)
Akash and Function, Exact Marks
CodeChef Starters 29 Division 2 (Rated)
String protocol, Plusle and Minun on Array, Decomposition Reaction
CodeChef Starters 34 Division 2 (Rated)
Average Array
April Lunchtime 2022 Division 2(Rated)
Pair Pain
Starters 35 Division 2 (Rated)
Dark Light, Chef Find XOR Beautiful, Concurrent Lines, Admins and Shopping
Starters 36 Division 2 (Rated)
Presents for Cheffina
April Long Two 2022 Division 2 (Unrated)
Akash and Equal Mean, Pseudo Sorted Array
Starters 37 Division 2 (Rated)
Dazzling Even-Odd Challenge, Beat the Average, Infernos, Maximum OR Minimum
May Long One 2022 Division 2 (Unrated)
Pushpa , The Attack of Queen
May Lunchtime 2022 Division 2 (Rated)
Bucket and Water Flow , Maximum Pairwise Modular Sum
Starters 39 Division 2 (Rated)
Compress the Video, Closest Vowels, Even Subarray XOR
May Long Two 2022 Division 2 (Unrated)
Make them Zero
July Cook-Off 2022 Division 2 (Rated)
Permutation And Median, Xor Permutation, Segmentation Fault
Starters 42 Division 2 (Rated)
Minimum or Maximum, Divisible by 3
June Long One 2022 Division 2 (Unrated)
Divisible by i , Possible GCD, Alternate Additions, Equal Strings
Starters 44 Division 2 (Rated)
Alternating Strings, Atleast and Atmost, Triple Xor, Dense Bracket Sequence
Starters 43 Division 2 (Rated)
The Optimal Pairs, Distinct Palindrome
June Lunchtime 2022 Division 2 (Rated)
Zero Ones Equal One Zeros, The Lost Array, Max Shift After XOR, XOR Times 2 Is Sum, Equal by XORing
June Long Two 2022 Division 2 (Unrated)
Count the ACs, Strong Elements
Starters 45 Division 2 (Rated)
Even Equal Odd, Xor and Multiply, Retrieve the Array, Adjacent Sum Parity
Starters 46 Division 2 (Rated)
Prime Xor, Array sorting
Starters 47 Division 2 (Rated)
Similar Heights, End Sorted
July Lunchtime 2022 Division 2 (Rated)
Easy Pronunciation, Yet Another Palindrome Making Problem
Starters 48 Division 2 (Rated)
Fill The Grid, Make Palindrome 2
Starters 52 Division 2 (Unrated)
Minimum Sum, WA Test Cases
August Lunchtime 2022 Division 2 (Rated)
Easy Permutation, Array Equality
Starters 55 Division 2 (Rated)
Balls and Boxes, Mean and Median, OR Tuples
September Long 2022 Division 2 (Unrated)
Interesting Subarray, Good Pairs
Starters 67 Division 2 (Rated)
Maximum Angriness, Expensive Steps , Counting Problem
Starters 68 Division 2 (Rated)
Boring String, XOR Product, Expense List, Make Money
Starters 69 Division 2 (Rated)
Akash and Dinner, Distinct Sequence
Starters 70 Division 2 (Rated)
Minimum distance between 1s, Prime Reversal, Frequency Array Retrieval
Starters 71 Division 2 (Rated)
Pet Store
December Long 2022 Division 2 (Unrated)
Divisible by A_i, Gcd of Subarrays, Maximise XOR
Starters 72 Division 2 (Rated)
N Triplets, No sequence
Starters 73 Division 2 (Rated)
Find an integer, Consecutive Xor, Append for OR
Starters 74 Division 2 (Rated)
Lcm hates Gcd, Odd Even Binary String
Starters 75 Division 2 (Rated)
Equal Hamming Distance, Prefix Ones, Three Powers of Two
January Long 2023 Division 2 (Unrated)
Asymmetric Swaps
Starters 78 Division 2 (Rated)
Bitwise Equation, Valid Expression
Starters 79 Division 2 (Rated)
Mountain, One Stone or Two Stones, Add smallest prime factor, Distinct Opposite Sums
Starters 80 Division 2 (Rated)
Permutation Subsequence, Prefix Permutation, Equal Elements
Starters 84 Division 2 (Rated)
SUM OR, Max count of 1, Digit Operation, Max Binary, Chef And Adjacent Sums
Starters 86 Division 2 (Rated)
String Game , Maximise Score
Starters 90 Division 2 (Rated)
Crushed Apples and a Balance Scale, Sum of Goodness, Printing Binary Array, Anti Palindrome
Starters 91 Division 2 (Rated)
Odd GCD Permutation, Chef Odd, Blobby Volley Scores, Maximum Sum Permutation
Starters 92 Division 2 (Rated)
Rectangular Tiling, Distance Coloring, Dotify Playlist
Starters 93 Division 2 (Rated)
Break Free, NASA, Problem
Starters 94 Division 2 (Rated)
CodeChef Streak, Possible or Not, The Vowel Matrix
Starters 95 Division 2 (Rated)
Boxes, Transfusion Chain, EVacuate to Moon
Starters 98 Division 2 (Rated)
Airport Management
Starters 99 Division 2 (Rated)
Card Swipe, Exclusion-Inclusion
Starters 100 Division 2 (Rated)
Prime Permutation, Stamps 100
Starters 102 Division 2 (Rated)
Chess ELO, Parity Permutation, Bit Play
Starters 105 Division 2 (Rated)
Take it Easy, Dull Operation
Starters 109 Division 2 (Rated)
Minimum XOR, Best of N Sets, Alter Ego
Starters 111 Division 2 (Rated)
LCM Mania, Beautiful Strings, Reach Codetown
Starters 112 Division 2 (Rated)
Cursed Indices, 3 Logicians Walk into a Bar, Max Nutrition
Starters 113 Division 2 (Rated)
Minimise Maximum Subarray Sum, Maximum Score , Sum Neq
Starters 114 Division 2 (Rated)
Rock-Paper-Scissors, Christmas Candy
Starters 116 Division 2 (Rated)
Chef Product, ORST , Access Control
Starters 117 Division 2 (Rated)
Equality Etiquette, Not Prime Permutation, Spell Shortening
Starters 118 Division 3 (Rated)
Subset GCD, Literacy Rate, Join States, Xorry 2, Xorry 1
Starters 119 Division 3 (Rated)
Judged, Cookie Day, Another Good String , K Odd Sum, Unalike Gcd & Lcm
Starters 120 Division 2 (Rated)
Sub or Swp
Starters 121 Division 2 (Rated)
Frequal, Caesar Cipher Lite, Anti Adjacent Swaps
Starters 122 Division 2 (Rated)
Arya In Grid, Man of the Match
Starters 123 Division 2 (Rated)
Maximise Adjacent Sum, Check Adjacent Sum, Minimum And Maximum I, Yet Another Alice Bob Game, Minimum And Maximum II
Starters 124 Division 2 (Rated)
Binary Parity, Table Strength, Swap and Unite, Make It One, How many arrays
Starters 125 Division 2 (Rated)
Bucket Game, Operating on A, Fake Certificate, Binary Minimal
Starters 126 Division 2 (Rated)
Freedom, Permutation Disturbance, Triangular Swaps
Starters 127 Division 2
ABC Conjecture, Superincreasing, Anti-Triangle
Starters 128 Division 2 (Rated)
MEXimize the Array, Disjoint Non-Decreasing Array
Starters 129 Division 2 (Rated)
Palindromic Substrings, Ballon d Or
Starters 131 Division 2 (Rated)
Digit Space, Dice Deception, Encrypt Value
Starters 133 Division 2 (Rated)
Maximum Alternating Sum
Starters 134 Division 2 (Rated)
Origin, Rock Paper Scissors
Starters 135 Division 2 (Rated)
Invert And Equalize, Change A to B
Starters 136 Division 2 ( Rated )
Sum of Modes, My First Geometry Problem
Starters 137 Division 2 (Rated)
Large Differences
Starters 138 Division 2 (Rated)
A power B mod C , TRIPLE PRIMES, Prefix Suffix Inequality, Long Drive, Distinct Substring
Starters 141 Division 2 (Rated)
Redundant Array, Amphibian Escape
Starters 143 Division 2 (Rated)
Non-Divisor Array, Binary Conversion
Starters 145 Division 2 (Rated)
Make Bob Win , Make My Array Equal, Square String
Starters 149 (Rated)
Easy Subarray Sum, Maximise Sum, Chef Loves Beautiful Strings (Easy Version)
Starters 155 (Rated)
GCD to 1 (Easy), GCD to 1 (Hard)
Starters 160 (Rated)
Palindrome Love, Modindrome, Buying Order (Easy), Equate S and T
Starters 166 (Rated)
Divisors Array (Easy Version), Chefland Library
Starters 168 (Rated)
No Two Alike, Binary Removals, Make Odd
Starters 169 (Rated)
Hamming equivalent, Make K Most Frequent
Starters 170 (Rated)
qUiRkY qUesTs (Easy), Monster Monster
Starters 172 (Rated)
Transform String, AndOr, Streak Star
Starters 173 (Rated upto < 2700)
Cool Subsequences, Time Penalty
Starters 176 (Rated)
Same And, Clothing Store, Costly Summit
Starters 179 (Rated)
Lost in the Fest!!, Station Allocation, Unlock The Safe
Starters 180 (Rated)
Shall we play a game, Array Operations
Starters 181 (Rated)
Flip Prefix, Find Outside Array