CodeChef Logo CodeChef Logo
Courses

Programming and DSA

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

Career Paths

From beginner to job-ready. Explore our curated career paths designed to help you succeed in the tech industry.

Other Courses

Programming and DSA

Explore courses

Catalogue

Programming and DSA

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

Career Paths

From beginner to job-ready. Explore our curated career paths designed to help you succeed in the tech industry.

Other Courses

Explore courses
Practice Compete Compiler
Upgrade to Pro
Courses

Programming and DSA

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

Career Paths

From beginner to job-ready. Explore our curated career paths designed to help you succeed in the tech industry.

Other Courses

Programming and DSA

Explore courses

Catalogue

Programming and DSA

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

Career Paths

From beginner to job-ready. Explore our curated career paths designed to help you succeed in the tech industry.

Other Courses

Explore courses
Practice Compete Compiler
Home » Mathusalen
user profile

Mathusalen

  • 5★mathusalen
  •   Spain
  • Professional
  • University of Barcelona
  • No Active Plan. View Details

Submissions Heat Map

Rating Graph

No. of Contests Participated: 57
2112 (-66)RatingProvisional
Rating i Provisional Rating, click to know more
September Challenge 2020 Division 1(2020-09-14 15:00:00)
Global Rank:   523
Cheated in:   

Ratings System Update

(2020-09-14 15:00:00)
This is the difference due to changing the rating system.This graph is not updated after 20th Dec 2022. Know more
How the rating system works?
2112 (+163)RatingProvisional
Rating i Provisional Rating, click to know more
September Challenge 2020 Division 1(2022-12-20 00:00:00)
Global Rank:   523
Cheated in:   

Ratings System Update

(2022-12-20 00:00:00)
This is the difference due to changing the rating system.This graph is not updated after 20th Dec 2022. Know more
How the rating system works?

Learning Paths (0)

None

Practice Paths (0)

None

Contests (57)

August Challenge 2016

Chef and His Garden, Chef and Circle Run, Chef and Chocolate, Chef and Round Run, Funny gnomes

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, Power Sums, Chef and Two String, Bear and Shuffled Points

November Challenge 2016

Count Permutations, Friends Meeting, Urban Development, Gift and Chef, Chef and squares, Sereja and Ways in the Cube, Task for Alexey

December Challenge 2016

Train Partner, Kth Max Subarray, Chef and Finding Direction, Kirito in labyrinth, Edit Distance Revisited, Our Base is Under Attack, Bear and Three Colours

October Cook-Off 2016

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

October Lunchtime 2016

Restore the Permutation, The Largest Bouquet

November Lunchtime 2016

Chef and his Students, Chef and Square Set

January Challenge 2017

Capital Movement, Cats and Dogs, Chef and Circle, Fantastic Four, Reservior, Tourists in Mancunia

February Challenge 2017

Chef and Yoda, Eugene and big number, Primitive Queries, Interval Game, Rebel rescue, Chef and Triangles, Chef and his Best Friend, Chef and His Apartment Dues, Most Frequent Element, Gerrymander, Alice and her garden

March Challenge 2017

Cooking Schedule, Completing favorite game, Xenny and Alternating Tasks, Pishty and birthday, Bear and Extra Number, Bear and Cat Trap, Bandwidth of a matrix

February Cook-Off 2017

Download file

January Lunchtime 2017

Sealing up, Nothing in Common

May Challenge 2017

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

June Challenge 2017

Chef and Prime Queries, 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, Multiplication Program, Tree Expectancy, Whats in the Name, Calculator , IPC Trainers

August Long Challenge 2017

Chef and Rainbow Array, Chef And Fibonacci Array, Chef and Mover, Hill Jumping, Palindromic Game, Mathison and the Data Warehouse (Challenge), Greedy Candidates, Strings and Graphs

September Challenge 2017

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

December Challenge 2017

Chef and Universe, Total Diamonds, Chef And his Cake, Chef, Leonardo And Queries, 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

August Cook-Off 2017

Matrix and Chef, Real obtuse, From heaven to earth

September Cook-Off 2017

Infinite OR Game, Statistics Construction, Subsequence Equality

April Lunchtime 2017

Bear and Segment 01

January Challenge 2018

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, Akanksha and End of Semester, Points Inside A Polygon, Car-pal Tunnel, Permutation and Palindrome

February Cook-Off 2018

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

March Challenge 2018 DIV 1

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

May Challenge 2018 Division 1

S-T Mincut, Series Sum, Change the Signs, Not a Convex Hull (Challenge), Fake Binary Search, Rubber Band, Dibs on Fibs

June Challenge 2018 Division 1

Two Flowers, Vision, Ways to Work

July Challenge 2018 Division 1

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

August Challenge 2018 Division 1

Coordinate Compression , Modular GCD, Princess and Dragons, Safe Partition, Interactive Matrix, Lonely Cycles

September Challenge 2018 Division 1

AND Square Subsegments, Sasha and Photos, Table Game, Bad Shuffle

December Challenge 2018 Division 1

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

October Challenge 2018 Division 1

Walk on Tree, Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard

January Challenge 2019 Division 1

Yet Another Problem About Sequences, Different Neighbours, Distinct Pairs, A Pizza Slice

February Challenge 2019 Division 1

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

March Challenge 2019 Division 1

Chef and Soccer, Cheating on Queue, Treasure Hunt, Yet Again a Subarray Problem, Matchable Permutations, (Challenge) Interleaving Strings

April Challenge 2019 Division 1

Playing with Numbers, Subtree Removal

April Cook-Off 2019 Division 1

Doubly Increasing Path, Random Game, Pied Piper vs Hooli

May Challenge 2019 Division 1

Where to Build the Roads

May Cook-Off 2019 Division 1

Misha and Nice Sets, Expected Xor, Searching for a Biclique

May Lunchtime 2019 Division 1 (Unrated)

Grid Tour

June Challenge 2019 Division 1

Lent Money, Count Arrays, Chef and Ingredients, Intersecting Paths, Sum and GCD, Forgotten Tree 9

June Cook-Off 2019 Division 1

Nice Subsets, Ants and Anteaters, Drink Slush

July Challenge 2019 Division 1

Hit the Coconuts, Guess the Prime!, Codechef War, LOVEMUFFIN, Circular Merging

August Challenge 2019 Division 1

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

August Cook-Off 2019 Division 1

Warriors, Rich Substrings, Two Circles

September Challenge 2019 Division 1

Biladerim Icin, Fuzzy Linear Combinations, Expected GCD, Doofish Set, Dodgers, Power Sum, Chef Designed a Network, (Challenge) Sebi and CPU Design

October Challenge 2019 Division 1

Even Edges, Chef and Maximum Star Value, Array Modification

November Challenge 2019 Division 1

Physical Exercise, Smallest Beautiful Number, From Zero to Infinity, A Simple Game, Winning Ways, D-Dart

December Challenge 2019 Division 1

Chefina and Ranges, Binary XOR, Binomial Fever, Sticky Notes, Test Generation, (Challenge) Cubical Virus, Addition

International Coding League 2019 (Rated for Division 2)

FlatLand

January Challenge 2020 Division 1

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

February Challenge 2020 Division 1

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

April Challenge 2020 Division 1

Strange Number, Squared Subsequences, Perfect Power Divisors, Ready Bitwise, Factor Tree, Line Line Line Graph, Leaked Answers (Challenge)

July Challenge 2020 Division 1

Chefina and Swaps, Missing a Point, Doctor Chef

August Challenge 2020 Division 1

Subsequence Frequency Counting, Smallest KMP, Chef and Wedding Arrangements

September Challenge 2020 Division 1

Chefina and Swap, Chef and Trump Cards, Find XOR, Ada Matrix

Total Problems Solved: 296

2112
(Div 1)
★★★★★
CodeChef Rating (Highest Rating 2446)
  • Inactive Global Rank
  • Inactive Country Rank

Badges

Contest Contender - Gold Badge

Contest Contender - Gold Badge

Received for participating in 50 Contests

Problem Solver - Silver Badge

Problem Solver - Silver Badge

Received for solving 250 Problems

Daily Streak - Bronze Badge

Daily Streak - Bronze Badge

Received for maintaining a streak of 5 days

Recent Activity

Fetching recent activity

Workden, MNR PRIDE, 14, HAL Old Airport Rd, Domlur I Stage, 1st Stage, DOMLUR, Bengaluru, Karnataka 560071 [email protected] +91 95911 47880
Find us online

ROADMAPS

Learn Python
Learn Java
Learn C
Learn C++
Data structures and Algorithms
Competitive Programming
More Roadmaps

CAREER PATHS

React JS Developer
SQL for Data Analysis
Frontend Developer
Java Backend Developer
Data Analysis using Python
Python Backend Developer
C++ Developer

COMPILERS

HTML online compiler
C++ online compiler
C online compiler
Java online compiler
Python online compiler
SQL online compiler
JavaScript online compiler
React online compiler
More compilers

COMPANY

About us
For colleges
Coding Contests
Blogs
Contact us
Privacy Policy

© 2025 CodeChef Inc. All rights reserved.

We use cookies to improve your experience and for analytical purposes. Read our Privacy Policy and Terms to know more. You consent to our cookies if you continue to use our website.