Joseph Owusu

• Username: 3★bitwiseoperato
• Country:  Ghana
• Student/Professional:Student
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

Last 6 Months 2025 (Jul-Dec)2025 (Jan-Jun)2024 (Jul-Dec)2024 (Jan-Jun)

Rating Graph

No. of Contests Participated: 28

Current Ratings Graph Old Ratings Graph

1625 (+13)RatingProvisional
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Starters 183 (Rated)(2025-04-23 22:00:02)

Global Rank:   757

Cheated in:   

Ratings System Update

(2025-04-23 22:00:02)

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1691 (+72)RatingProvisional
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Starters 42 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   2535

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)

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Contests (28)

July Challenge 2021 Division 3 (Rated)

Chef vs Bharat, XxOoRr, Relativity, Optimal Denomination, Maximum Production

July Lunchtime 2021 Division 3

Red Alert, Chef and Spells

August Challenge 2021 Division 3 (Rated)

Special Triplets, Array Filling, Chef and Bulb Invention, Problem Difficulties, Olympics Ranking

August Cook-Off 2021 Division 3

Which Division, Team Formation, Equal Difference, Different String

CodeChef Starters 9 Division 3 (Rated)

Black cells in a chessboard, Large Square, Bus full of passengers

September Challenge 2021 Division 2 (Unrated)

XOR Equal, Shuffling Parities, Airline Restrictions, Travel Pass

February Lunchtime 2022 Division 2

Four Equidistant Points on a Grid, Parallel Processing

CodeChef Starters 28 Division 2 (Rated)

Permutation Xority, Count the Holidays

CodeChef Starters 29 Division 2 (Rated)

String protocol, Plusle and Minun on Array, Decomposition Reaction

CodeChef Starters 30 Division 2 (Rated)

Minimum Coloring, Gift Shop and Coupon, Balanced Reversals

March Cook-Off 2022 Division 3

Fixed Weight, Alternating Divisibility, Equal Mex Splitting, Janmansh at Fruit Market, Janmansh and Games

CodeChef Starters 31 Division 2 (Rated)

XOR and AND, Alternating String, Sign Moves, The Unchanging OR

March Lunchtime 2022 Division 2

Sad Splits, Adjacency Love

CodeChef Starters 32 Division 2 (Rated)

Maximize the Minimum, Flip Sorting, Finding Shoes, Training Plans

April Cook-Off 2022 Division 2

Sticks and Rectangles

CodeChef Starters 34 Division 2 (Rated)

Binary Mismatch, Average Array, Binary String Xor, Good Permutation

Starters 35 Division 2 (Rated)

Admins and Shopping, Dark Light, Jump to Sibling

Starters 36 Division 2 (Rated)

Buying Sweets, Presents for Cheffina

May Cook-Off 2022 Division 2 (Rated)

Different Subarrays Rearrange, Doubled Distances

Starters 38 Division 2 (Rated)

Good Pairs, Circular Track

Starters 40 Division 2 (Unrated)

Infinity Staircase

Starters 41 Division 2 (Rated)

Path Parity, Is this priority or parity!, Equal Integers

Starters 42 Division 2 (Rated)

Minimum or Maximum, Divisible by 3

Starters 74 Division 2 (Rated)

Lcm hates Gcd, Odd Even Binary String

Starters 78 Division 2 (Rated)

Valid Expression

Starters 80 Division 2 (Rated)

Permutation Subsequence, Prefix Permutation, Equal Elements

Starters 81 Division 2 (Unrated)

Divide Pages, Distinct Matrix

Starters 83 Division 2 (Rated)

Construct String, Order by XOR

Starters 90 Division 2 (Rated)

Printing Binary Array, Anti Palindrome

Starters 95 Division 2 (Rated)

Transfusion Chain, EVacuate to Moon

Starters 183 (Rated)

S to T, Larger Smaller, Max Triangle

Total Problems Solved: 95