Oleg B.

• Username: 7★oleg_b
• Country:  United States
• Student/Professional:Professional
• Organisation:Google
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

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

Rating Graph

No. of Contests Participated: 9

Current Ratings Graph Old Ratings Graph

2603 (+45)RatingProvisional
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March Challenge 2019 Division 1(2019-03-13 15:00:00)

Global Rank:   12

Cheated in:   

Ratings System Update

(2019-03-13 15:00:00)

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2603 (+37)RatingProvisional
Rating i Provisional Rating, click to know more

March Challenge 2019 Division 1(2022-12-20 00:00:00)

Global Rank:   12

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 (9)

March Challenge 2018 DIV 2

Chef and Easy Problem, Chef and Gcd Queries, A Big Sale, Mix the Colors, Chef and Glove, Minions and Voting, Minion Chef and Bananas, Embedding a Tree (Challenge), Pishty and Triangles

March Cook-off 2018 Division 1

Chef Goes to the Cinema, Chef Restores an Array, Chef Restores a Matrix

March Lunchtime 2018 Division 1 (Unrated)

Three Integers, Magic Elements, Partitions, Queries with GCD

April Challenge 2018 Division 1

Chef and Array (Challenge), Vaibhav and Ministers, Chef at the Food Fair, Cutting Plants, S Semi-palindromic, Highway Crossing, Chef and Same Old Recurrence, Count Good Prefixes, Chef and Same Old Recurrence 2

May Challenge 2018 Division 1

Dibs on Fibs, Fake Binary Search, Not a Convex Hull (Challenge), Change the Signs, S-T Mincut, Edges in Spanning Trees

August Challenge 2018 Division 1

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

ALKHWARIZM (Rated)

Help Voldemort, Hedwig The Smart Bird, Sam, The Charming Angel

Code Melange (Rated)

Candy Love, The Deadly Sin, CPI Crisis, XD Subsequences, Longest Constrained Subsequence

January Challenge 2019 Division 1

(Challenge) Chef and Matching Game, A Pizza Slice, Party, Maximum Distance, Distinct Pairs, Partition the Graph, Different Neighbours, Yet Another Problem About Sequences

March Challenge 2019 Division 1

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

Total Problems Solved: 67