Anton Postnikov

• Username: 4★anton_postnikov
• Student/Professional:Professional
• Organisation:Yandex
• 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: 33

Current Ratings Graph Old Ratings Graph

1888 (-17)RatingProvisional
Rating i Provisional Rating, click to know more

May Cook-Off 2022 Division 2 (Rated)(2022-05-01 23:00:02)

Global Rank:   482

Cheated in:   

Ratings System Update

(2022-05-01 23:00:02)

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?

1888 (+47)RatingProvisional
Rating i Provisional Rating, click to know more

May Cook-Off 2022 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   482

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 (33)

The January 2011 Cook-Off

Holes in the text, Chef team, Whole submatrix

February 2011 Contest

Bogosort, Counting Terms, Coloring Colorable Graphs

February Cook - Off Challenge

Breaking Into Atoms, Three Way Communications

March 2011 Challenge

K-Unique Sequence, Squares Game, The Amazing All-In-One Cooking Machine - Challenge

March Cook-off Challenge

Money Transformation, Snake Snaky

April Long Contest

Gravel, Number Game Revisited, Generalized Independent Sets, Graphs in Euclidean Space, Central Point, Rectangles Counting

April Cook-Off Challenge

A Prime Conjecture, Internet Media Types

May Long Contest 2011

Tree Product, The Great Wall of Byteland

June Long Contest 2011

Maximal Score Path, Chef Teams

July 2011 Long Contest

A-E Hash Function, Most Popular Friend

August Long Contest 2011

Infinite Grid Game, Shortest Circuit Evaluation

January 2012 Challenge

Houses and Restaurants, Lucky Sum, Card Shuffle

February 2012 Challenge

Lucky Count, Lucky Long, Word Couting, Count of Maximum

March 2012 Challenge

Longest Weird Subsequence, Lucky Number, Free Shuttle Service, Home Delivery, Spoon in Matrix

April Challenge 2012

Fit to Play, Double Strings, Stacking Pancakes, Greatest Dumpling Fight

March Cook-Off 2014

ABC-Strings, Dividing Stamps

April Cook-Off 2014

Snape and Ladder, BiCo Gaming Grid

May Cook-Off 2014

Divide the Cake, Ups and Downs

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

June Challenge 2014

Little Elephant and Blocks, Maxim and Progressions, Chef and Functions, Chef and Digit Jumps, Chef and Subarray, Guessing Game, Forgot Password

July Challenge 2014

Little Elephant and Painting, Garden Game, Chef and Frogs, Count Substrings, Reach The Point, Dish Owner

August Challenge 2014

Little Elephant and T-Shirts, Chef and Reversing, Chef and Gift

September Challenge 2014

Chef and Left-Right, Fun with Rotation

March Challenge 2018 DIV 2

Chef and Easy Problem, A Big Sale, Mix the Colors, Chef and Glove, Minions and Voting, Minion Chef and Bananas

February Lunchtime 2019 Division 2

Average Number, The Tricky Deal

March Long One 2022, Division 2 (Unrated)

Akash and Function, Subarray XOR, Substring of a Substring, Exact Marks, MEX on Trees

CodeChef Starters 29 Division 2 (Rated)

String protocol, Plusle and Minun on Array

March Long Two 2022, Division 2 (Unrated)

Missing Numbers, Same Parity Swaps in Binary Strings

CodeChef Starters 31 Division 2 (Rated)

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

March Lunchtime 2022 Division 2

Sad Splits, Winter, Adjacency Love

CodeChef Starters 32 Division 2 (Rated)

Maximize the Minimum, Finding Shoes, Flip Sorting

Starters 35 Division 2 (Rated)

Jump to Sibling, Dark Light

April Long Two 2022 Division 2 (Unrated)

Geometric Mean Inequality, Akash and Equal Mean, Chef And Division, Pseudo Sorted Array

May Cook-Off 2022 Division 2 (Rated)

Doubled Distances

May Long One 2022 Division 2 (Unrated)

Mystical Numbers, Pushpa , The Attack of Queen

May Long Two 2022 Division 2 (Unrated)

Subsequence-Numbers Divisible by 7, Xor Palindrome, Subarrays with length, Make them Zero

July Long Two 2022 Division 2 (Unrated)

To Divide or Not To Divide, Sum of Product 1

Total Problems Solved: 139