Ujjwal Upadhyay
- iamujj15
India- Professional
- CodeChef
- View Details
Submissions Heat Map
Learning Paths (13)
Learn C++
Problem solving in C
C++ STL - Standard template library
Problem solving in Python
Learn Java (Older version)
Greedy Algorithms
Learn Python Programming
SQL at Work
Learn Go
Completed
Heaps
Recursion
Time complexity
Java Problem Solving
Practice Paths (18)
Practice for ZCO and INOI
Practice Strings
Practice Python
Practice C++
Practice PHP
TCS NQT Coding Questions
500 difficulty rating
Data Structures Interview Questions
Arrays, Strings & Sorting
Practice Arrays
Practice Basic Math
Practice C
SQL case studies
SQL Practice Queries
1000 to 1400 difficulty problems
Prefix Sum Problems
2D Array / Matrices
React Advanced Interview Questions
Contests (74)
CodeChef Starters 27 Division 4 (Rated)
Distinct Binary Strings, Get Lowest Free, Too many items, Shopping Change, Blackjack, The product mystery
February Cook-Off 2022 Division 4
Complete the credits, Guess the bottom face, Lazy Salesman, Peaceful Party, Prefix Permutation
February Lunchtime 2022 Division 4
Four Equidistant Points on a Grid, Good Program, Battery Low, Watching Movies at 2x, Chessboard Distance
CodeChef Starters 28 Division 4 (Rated)
Chef and Instant Noodles, Permutation Xority, Self Defence Training, Car Choice, Qualify the round, Count the Holidays
March Long One 2022, Division 3 (Rated)
Akash and Function, Akash and Missing Class, Exact Marks, Wordle
CodeChef Starters 29 Division 3 (Rated)
String protocol, Plusle and Minun on Array, Bomb the base
March Cook-Off 2022 Division 3
Fixed Weight, Janmansh and Games, Janmansh at Fruit Market, Equal Mex Splitting
CodeChef Starters 33 Division 3 (Rated)
Distinct Dilemma, Minimum Cars required, Non Adjacent Flips, Make Them Equal
April Long One 2022, Division 3 (Rated)
Dazzling GCD Pair, Prime Sum, Dazzling AXNODR Challenge , The Cooler Dilemma 2, Pairwise Xors
CodeChef Starters 34 Division 3 (Rated)
Is the Score Consistent, Good Quality Bulbs
Starters 35 Division 3 (Rated)
Dark Light, Police and Thief
Starters 36 Division 3 (Rated)
Presents for Cheffina, Chef and Bird farm
April Long Two 2022 Division 3 (Rated)
Sasta Shark Tank, Best Coupon
Starters 37 Division 4 (Rated)
Dazzling Even-Odd Challenge, The Mango Truck, Roller Coaster, Beat the Average, Laptop Recommendation , Infernos, Maximum OR Minimum
May Long One 2022 Division 3 (Rated)
Mystical Numbers, Pushpa , Sugarcane Juice Business, The Attack of Queen
May Lunchtime 2022 Division 3 (Rated)
Bucket and Water Flow , Maximum Pairwise Modular Sum, Problems in your to-do list
Starters 39 Division 2 (Rated)
Compress the Video, Closest Vowels, Even Subarray XOR
Starters 41 Division 2 (Rated)
Equal Integers, Is this priority or parity!, Path Parity
Starters 43 Division 3 (Rated)
The Optimal Pairs, DNA Storage, Distinct Palindrome, Joining Date
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 3 (Rated)
Count the ACs, Make all equal using Pairs, AP Grid, Complementary Strand in a DNA, Reversal Sorting, Strong Elements
Starters 45 Division 3 (Rated)
Even Equal Odd, Xor and Multiply, Chef and his Apps, Retrieve the Array, Adjacent Sum Parity, Change Row and Column Both
Starters 48 Division 2 (Rated)
Fill The Grid, Make Palindrome 2, Positive array
Starters 52 Division 2 (Unrated)
Minimum Sum, WA Test Cases, K-Flip
August Lunchtime 2022 Division 2 (Rated)
Easy Permutation, Array Equality
Starters 53 Division 2 (Rated)
Black&White Ring Game, Make A and B equal, Queen Blocks
Starters 54 Division 2 (Unrated)
Equal Distinct
Starters 55 Division 2 (Rated)
Non Zero Xor, Balls and Boxes, Mean and Median, OR Tuples
Starters 56 Division 2 (Rated)
K-Subarrays, Maximize Colours
Starters 59 Division 2 (Rated)
Maximum Subarray , Suspense String, Confusing Concatenations
Starters 61 Division 2 (Rated)
Minimise LCS, Weird Subarrays, Subarray Removal
Starters 63 Division 2 (Rated)
One-XOR Deletions, Make Length 1, Minimum Absolute Score
Starters 64 Division 2 (Rated)
Luigi and Uniformity, Range Assign, Number of Distinct Elements Minimize, Prime Factor Division, Distinct Neighbours
Starters 65 Division 2 (Rated)
Nahaane Jaa, Candies, Binod
November Long 2022 Division 2 (Unrated)
Split and Maximize
Starters 66 Division 2 (Rated)
Good Binary Strings, Palindrome by Splitting, Just Like Mob!
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, Flip the Prefix, Maximizing LCS
Starters 72 Division 2 (Rated)
N Triplets
Starters 74 Division 2 (Rated)
Lcm hates Gcd, Minimal Inversions, Odd Even Binary String
February Cook-Off 2023 Division 2 (Rated)
Take Not Less, Permutation and Modulus
Starters 79 Division 2 (Rated)
Love Squares Hate Cubes, 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 82 Division 2 (Rated)
Find eX, Make A-B Same, Difference Matrix, MIN To MAX
Starters 84 Division 2 (Rated)
SUM OR, Max count of 1, Digit Operation, Max Binary, Chef And Adjacent Sums
Starters 85 Division 2 (Rated)
Crazy Bishops on Chessboard, Efficient PAN Linking, Inside The Stadium
Starters 86 Division 2 (Rated)
String Game , Largest Y, Maximise Score
Starters 87 Division 2 (Rated)
Inversions of subsequences, Existence, AB plus C
Starters 89 Division 2 (Rated)
Plus 2 or Minus 1, Positive or Negative Subarrays, Subarray Removal
Starters 90 Division 2 (Rated)
Crushed Apples and a Balance Scale, 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 98 Division 2 (Rated)
3-Blast Palindrome, Airport Management, Ball Distribution
Starters 99 Division 2 (Rated)
Card Swipe, Exclusion-Inclusion
Starters 100 Division 2 (Rated)
Stamps 100
Starters 101 Division 2 (Rated)
Minimize Xor Difference, Warrior Chef, Lockpicking Chef
Starters 102 Division 2 (Rated)
Parity Permutation, Bit Play, Array Sum
Starters 103 Division 2 (Rated)
Unique xor, Divisible By 8, Dice Number
Starters 104 Division 2 (Rated)
Lexicographically Largest , Maximise Sum, GCD and LCM
Starters 105 Division 2 (Rated)
Take it Easy, Dull Operation
Starters 106 Division 2 (Rated)
Playing with OR, Save People, Guess the winner!
Starters 107 Division 2 (Rated)
Rock Paper Scissor, OR Permutation
Starters 109 Division 2 (Rated)
Minimum XOR, Best of N Sets, Alter Ego
Starters 111 Division 2 (Rated)
LCM Mania, Prefixing, Beautiful Strings, Reach Codetown
Starters 114 Division 2 (Rated)
Rock-Paper-Scissors, Christmas Candy
Starters 115 Division 2 (Rated)
Greedy LIS Algorithm, A PLUS B Remastered, Decorating Christmas Tree
Starters 116 Division 2 (Rated)
Chef Product, ORST , Access Control
Starters 127 Division 2
ABC Conjecture, Superincreasing, Anti-Triangle
Starters 128 Division 2 (Rated)
Binary Substring, XOR And Multiply, MEXimize the Array, Disjoint Non-Decreasing Array
Starters 129 Division 2 (Rated)
Palindromic Substrings, Ballon d Or, ConstructXor
Starters 130 Division 2 (Rated)
Updating A, Make Equal, Alternating Binary String, Good Binary String
Starters 132 Division 1 (Rated till 6 Stars)
ALIEN-OR, Optimal Flip, Prime Query