Costin Andrei Oncescu

• Username: 5★geniucos
• Country:  Romania
• Student/Professional:Student
• Institution:University of Oxford England, United Kingdom
• 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: 20

Current Ratings Graph Old Ratings Graph

2121 (+94)RatingProvisional
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February Cook-Off 2018(2018-02-19 00:00:00)

Global Rank:   27

Cheated in:   

Ratings System Update

(2018-02-19 00:00:00)

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2121 (+42)RatingProvisional
Rating i Provisional Rating, click to know more

February Cook-Off 2018(2022-12-20 00:00:00)

Global Rank:   27

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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Practice Paths (0)

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Contests (20)

October Challenge 2013

Little Elephant and Bamboo, Helping Lira, Maxim and Dividers, Sereja and Transformation, CAO Stage-3, Yet Another Nice Girl, Edit Distance on Grid, Kamehameha

November Challenge 2013

Superpowers of 2, Yet Another Cute Girl, Sereja and Vectors, Uncle Johny, Square Digit Squares, Missing some chairs

December Challenge 2013

Cube Cakes, Chef and Codes, Funny Marbles, Magic Pairs, Reign, Rectangular Queries

January Challenge 2014

Magic Trick, Counting D-sets, Meteor, Byteland Tours, Bon Appetit, Please like me, Chef and Feedback

February Challenge 2014

Little Elephant and Movies, Draughts, Make Him Happy, Longest Common Pattern, Little Elephant and Subarrays, Colored Array, Make It Zero 2

March Challenge 2014

Team Split, Binary Tournament, Walk, Maximum number, GCD condition, Little Chef and Numbers, Mike and Stamps, A Story with Strings

April Challenge 2014

Sereja and Permutation, Counting Matrices, Farmer Feb, Cards, bags and coins, Chef and Digits, Divide the Tangerine, Shortest Path in Binary Trees

May Challenge 2014

Little Elephant and Balloons, Sereja and Game, Compilers and Parsers, Dynamic Trees and Queries, Chef-jumping, Fun with AGp, Chef and Strange Matrix, Stone

June Challenge 2014

Maxim and Progressions, Chef and Functions, Chef and Subarray, Guessing Game

July Challenge 2014

Count Substrings

August Challenge 2014

Chef and Reversing, Chef and Gift

November Challenge 2014

Chef and Segment Game, Chef and Words, Fombinatorial, Sereja and Permutations, Distinct Characters Subsequence, Chef and Red Black Tree, Chef and Churu

December Challenge 2014

Chef Under Pressure, Chef and Bracket-Pairs, XOR with Subset, Chef and Apple Trees, Sereja and GCD

November Challenge 2015

Ingredients, Receipt Recovery, Chef and collection of stamps, Eugene and function, Simple Sum, Chef and cakes

January Long Challenge 2016

Sereja and Salesman, Chef and Inflation, Cyclist Race

April Challenge 2016

Mario and Luigi, Fibonacci Queries, Devu and good strings

June Challenge 2016

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

January Challenge 2018

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

February Cook-Off 2018

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

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