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Programming and DSA

Learn to think like a programmer. Develop your problem-solving skills with essential data structures and algorithms.

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Programming and DSA

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Home » Ajinkya Parab
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Ajinkya Parab

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  • 6★ajinkya1p3
  •   India
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No. of Contests Participated: 172
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Starters 188 (Rated till 6 star)(2025-05-28 22:00:00)
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SnackDown 2021 - Online Pre-Elimination(2022-12-20 00:00:00)
Global Rank:   705
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Practice for ZCO and INOI

26%

Contests (172)

October Cook-Off 2014

The Army, Walk on the Axis

November Cook-Off 2014

Brackets

October Challenge 2014

Remy paints the fence, Chef and Ground, Chef and Painting, Chef and Square, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus

November Challenge 2014

Chef and Segment Game, Chef and Words, Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome, The Spelling Problem

December Challenge 2014

Alok-nath and His Sanskars, Kali and Devtas, XOR with Subset, Chef and Apple Trees

September Lunchtime 2014

Chef and easy problem

October Lunchtime 2014

Tanu and Head-bob

November Lunchtime 2014

A wolf, a sheep and cabbage

December Lunchtime 2014

Delivery Man

January Challenge 2015

Sereja and Number Division 2, Chef and A Large Permutation, Sereja and LCM, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries

January Cook-Off 2015

Suraj goes shopping, Tojo hates probabilities

January Lunchtime 2015

Piece of cake

February Challenge 2015

Chef and Chain, Chef and Strange Formula, Chef and Complex String Coverage, Chef and Strings, Let us play with rank list, Jigsaw Puzzle Solving, Chef and Equality

March Challenge 2015

Count Substrings, Chef and Notebooks, Devu and his Class, Sign Wave

April Challenge 2015

Chef and Interview, Broken Telephone, Division of Lands, Chef and Piano Scales

May Challenge 2015

Devu and his three Hands, Devu and binary String, Chef and Prime Divisors, Set Difference , Chef and new recipe

June Challenge 2015

Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons

July Challenge 2015

Addition and Multiplication, Sereja and Game 2, Bread, MasterChef, Na2a and lucky stone, Chef and Cube, Rohith and Circles

August Challenge 2015

Way Out, Gravity Guy, Devu And Churu , Cooking Machine, Aditi and Magic Trick, Chef and insomnia

September Challenge 2015

Chain of Doughnuts, Count Steps in Matrix

October Challenge 2015

Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Rupsa and Equilateral Triangle

November Challenge 2015

Chef and collection of stamps, Eugene and function, Simple Sum, Chef and cakes

December Challenge 2015

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

February Cook-Off 2015

Fit Squares in Triangle, Strategy for the World Cup

March Cook-Off 2015

How to Minimize a String, How to Repaint a Fence

April Cook-Off 2015

Equality, Version Control System

May Cook-Off 2015

Devu and friendship testing, Devu and decorating birthday cake

June Cook-Off 2015

Longest non regular parentheses sub-sequence, Strange operations

August Cook-Off 2015

Chef and the XORed Number , Chef and the Wildcard Matching

September Mega Cook-Off 2015

Forgotten Language, Super Numbers, Stacks

October Cook-Off 2015

Word Stem, Almost Sorted Permutation

November Cook-Off 2015

Sereja and Line, Sereja and Array and Subtracting

February Lunchtime 2015

Lucky Four

March Lunchtime 2015

Chef Anup

May Lunchtime 2015

Devu and Grapes, Number of Ways

June Lunchtime 2015

Chef and Submatrix, Chef and Two Strings

August Lunchtime 2015

Minimum Maximum

October Lunchtime 2015

emitL

January Long Challenge 2016

Sereja and Salesman, Rupsa and the Game, Churu and Balls, Chef and Time Machine, Devu and Perfume

February Challenge 2016

Sereja and Two Lines, Chef and Strange Operations, Devu and a light discussion, Rectangles of Love, Chef-Detective, Matrix Maximum Sum

March Challenge 2016

Sereja and Two Strings 2, Palindromic substrings, Chef and Number Guessing, maximize the sum, Chef And Special Dishes

April Challenge 2016

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

May Challenge 2016

Sereja and GCD 2, Chef and math, Chef and Balls, Forest Gathering, Chef and Big Soccer, Laddu

June Challenge 2016

Chef And The Hiring Event, Chef and Rectangle Array, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Chef and cities, Devu and an Array

July Challenge 2016

Andrash and Stipendium, Chef and Segments, Chef and Tetris, Chef and special numbers, Chef and Robots Competition, Chefland and Electricity

August Challenge 2016

Chef and His Garden, Fighting Ebola, Chef and Circle Run, Chef and Chocolate, Chef and Round Run, Funny gnomes, Maximum Grid

September Challenge 2016

Chef and Friends, Dividing Machine, Chef and Matrix Division, Chef and digits of a number, Faded Palindromes, JosephLand, Chef and calculation

October Challenge 2016

Sereja and Progressions, Sereja and Stones, Chef and Keyboard, Big Queries, Fenwick Iterations, Chef and Three Dogs, Chef and Two String

November Challenge 2016

Count Permutations, Friends Meeting, Urban Development, Gift and Chef, Chef and squares, Task for Alexey

December Challenge 2016

Train Partner, Kth Max Subarray, Kirito in labyrinth, Our Base is Under Attack

January Cook-Off 2016

Chef and Destruction, Chef and Fruits

February Cook-Off 2016

Puppy and Catchers, Puppy and Board, Puppy and Sum

March Cook-Off 2016

Digital clock, Dual Nim, Alternating subarray prefix

April Cook-Off 2016

Movie Weekend, Odd Divisors, Queries on a Binary Tree

June Cook-Off 2016

Sticks, Right Triangle

July Cook-Off 2016

Chef and Proportion, Chef and Numbers

August Cook-Off 2016

Tweedle-Dee and Tweedle-Dum

September Cook-Off 2016

Lazy Jem, The Lost Arithmetic Sequences, Counting Strings

October Cook-Off 2016

Sherlock and the Ugly Flower, Watson asks Does Permutation Exist, ChefWatson uses Social Network

November Cook-Off 2016

Sebi and the cube, Sebi and the highway, Sebi and the corrupt goverment

February Lunchtime 2016

Chef and Socks, Chef and Tic-Tac-Toe

March Lunchtime 2016

Simple Statistics, ABABAABA

June Lunchtime 2016

Collisions, One more weird game

July Lunchtime 2016

Drumpf for President!, Lumpy - The Bus Driver

September Lunchtime 2016

Chef and Inequality

October Lunchtime 2016

The Largest Bouquet

December Lunchtime 2016

Superheroes and villains, Fly height mode

January Challenge 2017

Capital Movement, Cats and Dogs, Digits Cannot Separate, Reservior, Tourists in Mancunia

February Challenge 2017

Chef and Yoda, Eugene and big number, Interval Game, Chef and Triangles, Chef and his Best Friend, Chef and His Apartment Dues, Most Frequent Element, Gerrymander

March Challenge 2017

Cooking Schedule, Xenny and Alternating Tasks, Pishty and birthday, Bear and Extra Number, Bandwidth of a matrix

January Cook-Off 2017

Digit Longest Increasing Subsequences 2

February Cook-Off 2017

Download file, Chairs, Cooking Game

January Lunchtime 2017

Sealing up, Nothing in Common

April Challenge 2017

Chef and Digits, Bear and Random Grid, Chef and Divisor Tree, Stable market, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes

May Challenge 2017

Chef and Sub Array , Gotham PD, 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, Saboteur (Challenge), A Good Set, Cloning, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets

July Challenge 2017

Chef and Sign Sequences, Pishty and tree, Whats in the Name, Calculator , IPC Trainers, Two Coins

August Long Challenge 2017

Chef and Rainbow Array, Chef And Fibonacci Array, Chef and Mover, Palindromic Game, Greedy Candidates, Strings and Graphs

September Challenge 2017

Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Weasel does Xor on Tree, Fill The Matrix, Little Chef and Sums

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, Polynomials, Chef and Subarray Queries, Chef goes Left Right Left, Lovers Gift, Periodic Palindrome Construction, Villages and Tribes

December Challenge 2017

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

March Cook-Off 2017

Yet Another Card Game, Safe Robot

November Cook-Off 2017

Hasan and boring classes, Skiing, Online Chess, Random Pair

December Cook-Off 2017

Minimum SubArray, Beautiful Array, Football Match

March Lunchtime 2017

Bear and Ladder, Bear and Species

April Lunchtime 2017

Bear and Digit Virus, Bear and Segments, Bear and Segment 01

May Lunchtime 2017

Prefix Inversions

July Lunchtime 2017

Find the Maximum Value

August Lunchtime 2017

Mathison and the Dynamo shuffle, Mathison and pangrams

September Lunchtime 2017

Chef and Dice, Chef and Cook-Off Contests

International Coding League (Rated)

Cards Game, Worst Case Analysis, Infinite Graph

Alkhwarizm 2017 (Rated)

Logan and his XOR debacle, X-24 and his SUBSET code, Charles and the BRUTAL subsequences, Deadpool and his COOLEST Problem Ever, Professor X and Grouping of Numbers, Logan and DIGIT IMMUNE numbers

IOPC 2017 (Rated)

The Birthday Tears, Max Out, Christmas Time

January Challenge 2018

Killing Monsters, A humongous Query, K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers

February Challenge 2018

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

March Challenge 2018 DIV 1

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

April Cook-off 2018 Division 1

Run Direction, Binary Nim

August Cook-Off 2018 Division 1

GukiZ and Candies, Mixi Game

November Cook-Off 2018 Division 1

Beautiful Garland, A-B Game

December Cook-Off 2018 Division 1

Yalalovichik Numbers, Yalalovichik Strings

April Lunchtime 2018 Division 1

The hardest gcd problem, Triple-tree decomposition, Solve what you want, Fast forward travelling

April Challenge 2018 Division 1

Vaibhav and Ministers, Cutting Plants, Highway Crossing, Chef and Same Old Recurrence, Count Good Prefixes

May Challenge 2018 Division 1

S-T Mincut, Change the Signs, Fake Binary Search, Dibs on Fibs

June Challenge 2018 Division 1

Two Flowers, Vision, Ways to Work, Expected Buildings

July Challenge 2018 Division 1

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), Table Game, Bad Shuffle

December Challenge 2018 Division 1

Max and Electrical Panel, Chef and Interactive XOR

November Challenge 2018 Division 1

Appy Loves One, Good Median, Binary Strings

October Challenge 2018 Division 1

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

July Lunchtime 2018 Division 1

Forced Particles, GCD Sum, Prime divisors

August Lunchtime 2018 Division 1

Chef and Eid, Mix Mix Game

September Lunchtime 2018 Division 1

Opposite Cites, Chef Restaurant

October Lunchtime 2018 Division 1

Coloring the Grid, Weird Question

Code Melange (Rated)

XD Subsequences, The Deadly Sin, Candy Love

LoC April 2018 (Rated for Division 2)

Perfect Necklace, Cricket Score, Bob and Pallindromes

ProCon 2018 (Rated for all)

The Great Run, Kill them with your success, Awkward Pairs, Algebra Score

December Lunchtime 2018 Division 1

Choosing from Buckets, Drawing Lines, Age Calculator

January Challenge 2019 Division 1

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

January Lunchtime 2019 Division 1

Distances, Wanderer, Rooks

February Challenge 2019 Division 1

Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Art of Balance

March Challenge 2019 Division 1

Cheating on Queue, Yet Again a Subarray Problem, Matchable Permutations

March Cook-Off 2019 Division 1

XOR N-bonacci Sequence, Markers and Caps, Music Shopping

April Challenge 2019 Division 1

Offer for Chef, Kira Loves Palindromes, Mininum XOR over Tree, Playing with Numbers, Subtree Removal

April Lunchtime 2019 Division 1

Dream Problem, Firdavs and Planet F, Minimum Sum

May Challenge 2019 Division 1

Ada Rooks 2, Trees and Degrees, Where to Build the Roads

June Challenge 2019 Division 1

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

July Challenge 2019 Division 1

Guess the Prime!, Codechef War, Circular Merging

August Challenge 2019 Division 1

Guddu and his Mother, Encoding, Dilemma, Chef and Gordon Ramsay

September Challenge 2019 Division 1

Fuzzy Linear Combinations

October Challenge 2019 Division 1

Even Edges, Bacterial Reproduction, Chef and Maximum Star Value, Array Modification

November Challenge 2019 Division 1

Smallest Beautiful Number, From Zero to Infinity, A Simple Game

December Challenge 2019 Division 1

Chefina and Ranges, Binary XOR, Sticky Notes, Addition

January Challenge 2020 Division 1

Chef and Dynamo, Doraemon, Chefina and Prefix Suffix Sums, English

February Challenge 2020 Division 1

Chef and Railway Stations, No Change Required, Long Contest and Cook Off Overlaps

March Challenge 2020 Division 1

Winning Ways 2, Lasers Everywhere, Lasers Everywhere Alternative

April Challenge 2020 Division 1

Strange Number, Squared Subsequences, Ready Bitwise

June Challenge 2020 Division 1

The Tom and Jerry Game!

July Challenge 2020 Division 2

Ada King, Missing a Point, Chef and Card Game, Chef and Strings

August Challenge 2020 Division 2

Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP, Chef and Wedding Arrangements

September Challenge 2020 Division 2

Chefina and Swap, A Problem on Sticks, Chef and Trump Cards, Find XOR, Ada Matrix

October Challenge 2020 Division 1

Positive AND, Replace for X

November Challenge 2020 Division 1

Restore Sequence, Scalar Product Tree

January Challenge 2021 Division 2

Fair Elections

December Challenge 2020 Division 1

Hail XOR, Positive Prefixes, Even Pair Sum

October Cook-Off 2020 Division 1

Path-etic Sums, The In-XOR-able Task, Yet Another Crossover Episode

October Lunchtime 2020 Division 1

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

September Cook-Off 2020 Division 2

Joined Subarrays on Tree, Maximise Subsequence Value, Minimum Insertions, Bulbs and Wires, Bowling Strategy

September Lunchtime 2020 Division 1

Root the Tree, Robot Detector

February Challenge 2021 Division 2

Frog Sort, Team Name, Another Tree with Number Theory, Prime Game, Multiple Games, Maximise Function

March Challenge 2021 Division 2

Interesting XOR!, Dense Graph, College Life 4, Consecutive Adding, Paparazzi Gennady, Space Arrays, Maximum Topological Sort

April Challenge 2021 Division 2

Tree Permutations, Worthy Matrix, Chef and Dice, Boolean Game

May Challenge 2021 Division 2 (Rated)

Xor Equality, Tic Tac Toe

June Challenge 2021 Division 2 (Unrated)

Minimum Dual Area, Shortest Route, Bitwise Tuples, Bella ciao, Summer Heat

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements, Minimise Difference

CodeChef Starters 13 Division 2 (Rated)

Add and Divide, Chef in Vaccination Queue, Maximum Light Up, Make that Array!, Magical Doors

SnackDown 2021 - Online Round 1A

Dance Moves, Equal Beauty, Min Max LCM

SnackDown 2021 - Online Round 1B

Yet Another Flipping Problem 2, Insider Subsequences, Queens Placement , Largest Laddu, Help Nishant

SnackDown 2021 - Online Pre-Elimination

Odds and Evens, Product Pain

December Challenge 2021 Division 2 (Unrated)

Valleys and Hills, Rock Paper Scissors, Pyramid Traversal, List of Lists

January Long 2022 - I, Division 2 (Unrated)

Prime in a binary string

June Long Two 2022 Division 2 (Unrated)

Gcd and Lcm , Count the ACs, Reversal Sorting, Strong Elements

July Long Two 2022 Division 2 (Unrated)

Sum of Product 1

October Long 2022 Division 2 (Unrated)

Chef And Array Construction, Twos and Zeros, Binary Substituition, Single Operation Part 1, Single Operation Part 2

November Long 2022 Division 2 (Unrated)

MaxEdges, Split and Maximize, Spliting Balls

December Long 2022 Division 2 (Unrated)

Counting Subsequences, Divisible by A_i, Gcd of Subarrays, Maximise XOR

January Long 2023 Division 2 (Unrated)

Asymmetric Swaps, Symmetric Swaps, Minimize the Maximum, Array Halves

Starters 124 Division 2 (Rated)

Binary Parity, Table Strength, Swap and Unite, Make It One, How many arrays

Starters 126 Division 1 (Rated till 6 Stars)

Tree Distance Set, Freedom, Triangular Swaps

Starters 129 Division 1 (Rated till 5-Stars)

Palindromic Substrings, ConstructXor

Starters 130 Division 1 ( Rated till 6-Stars)

Updating A, Make Equal, Append Array, Good Binary String

Starters 131 Division 1 (Rated till 5 Stars)

K-Closeness, Digit Space, Encrypt Value, T-Perm

Starters 139 Division 1 (Rated till 5-Stars)

Sum of N, Counting in Base B, Destroying Bridges Part 2

Starters 140 Division 1 (Rated till 5-Stars)

Lucky Matrix, Split Permutation, Trick Or Treat, Break The String, Tree Removal

Starters 141 Division 1 (Rated till 5-Stars)

Amphibian Escape, Perfect Prefixes

Starters 142 Division 1 (Rated till 5-Stars)

Array Removal, Number Hunt

Starters 143 Division 1 (Rated till 5-Stars)

Non-Divisor Array, Max Min and Length, Spread of Ratism

Starters 144 Division 1 (Rated)

Largest K

Starters 149 (Rated till 5 stars)

Kill Monsters (Hard Version), Maximise Sum, Chef Loves Beautiful Strings (Easy Version)

Starters 153 (Rated till 5 stars)

Another Game, Colorful Tree (Easy Version), Xometry (Easy Version)

Starters 157 (Rated till 5 stars)

Small, Smaller, Smallest, MEXtreme Divisibility, Normal is Good, Unmedian

Starters 158 (Rated till 6 stars)

Make a Tree, Global Warming, Buying Game, Multiply 2 to Minimize

Starters 160 (Rated till 5 stars)

Palindrome Love, Modindrome, Buying Order (Easy), Buying Order (Hard)

Starters 162 (Rated till 5 stars)

Empty the String, MEX of XOR, Sum of Empty the String, Permutation Mod K

Starters 163 (Rated till 5 stars)

Tree Sum is Fun !, Nice Array, Permutation Pair, Sort Them, Lexio Swap

Starters 164 (Rated till 5 stars)

Halloween Array, Construct Permutation, Connecting Wells

Starters 165 (Rated till 6 stars)

A to B, Stable Array

Starters 166 (Rated till 6 stars)

All Equal, Distinct Power, Divisors Array (Hard Version), Divisors Array (Easy Version), Costly Permutations, Chefland Library

Starters 167 (Rated till 5 stars)

Alternate Universe, Lottery Tickets, Sum Over Subarrays, Grid Construction (Even), Grid Construction (Odd)

Starters 168 (Rated till 6 stars)

No Two Alike, Binary Removals, Xoperations, Equate XOR

Starters 169 (Rated till 5 stars)

Constant Subsequence, Hamming equivalent

Starters 171 (Rated till 5 star)

White Wall, Volcanic Eruption

Starters 172 (Rated till 5 stars)

Transform String, AndOr, Tactical Removal

Starters 173 (Rated upto < 2700)

Cool Subsequences, Introverts, Time Penalty, Overwrite

Starters 174 (Rated upto 2700)

Meximal Sum, Mystic Slimes

Starters 175 (Rated till 5 stars)

Alternate It!, Multiplexer

Starters 177 (Rated till 5 star)

Blocks on a Tree, Sum By OR, Flip or Reverse, Increasing XOR Queries

Starters 178 (Rated till 6 star)

Smoothly Increasing , Big Difference, Minimum Colours (Hard)

Starters 180 (Rated till 6 star)

Shall we play a game, Huh, Easy

Starters 181 (Rated for all)

The Best Matrix, Tree Colouring (Hard), Flip Prefix

Starters 182 (Rated till 5 star)

MasterChef, Short Piles, Palindromic Score

Starters 183 (Rated till 6 star)

Complete MST, S to T

Starters 184 (Rated till 5 star)

Second MEX, Adjacent OR, Front or Back, Double or Append

Starters 185 (Rated till 5 star)

GCD Summation, Asymmetric Cookies, Array Deletion Game, Range Maximum Deconstruction (Easy)

Starters 186 (Rated till 6 star)

Distinct Arrays , Segment Tree Reconstruction, Mod and Make Y

Starters 187 (Rated till 6 star)

Anti-Subarray Sum, OR What, Distinct Representations

Starters 188 (Rated till 6 star)

Swaps in a String, K Boxes, Inversion Queries, Yet Another Monsters Problem

Starters 189 (Rated till 5 star)

Number Walks, Blocks in a String, Create Binary String, Avoid Primes, Sortable Subarrays (Easy)

Starters 190 (Rated till 5 star)

Parry It! (Hard), Subsequence Sort, Min-Max Deletion

Total Problems Solved: 1391

2280
(Div 1)
★★★★★★
CodeChef Rating (Highest Rating 2345)
  • 286 Global Rank
  • 72 Country Rank

Badges

Contest Contender -  Diamond Badge

Contest Contender - Diamond Badge

Received for participating in 100 Contests

Problem Solver - Diamond Badge

Problem Solver - Diamond Badge

Received for solving 1000 Problems

Daily Streak - Silver Badge

Daily Streak - Silver Badge

Received for maintaining a streak of 25 days

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