Nobuaki Tanaka

• Username: 6★tomerun
• Country:  Japan
• Student/Professional:Professional
• Organisation:Tokyo
• CodeChef Pro Plan: No Active Plan. View Details

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

Rating Graph

No. of Contests Participated: 17

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2450 (-64)RatingProvisional
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November Challenge 2018 Division 1(2018-11-12 15:00:00)

Global Rank:   296

Cheated in:   

Ratings System Update

(2018-11-12 15:00:00)

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2450 (+316)RatingProvisional
Rating i Provisional Rating, click to know more

November Challenge 2018 Division 1(2022-12-20 00:00:00)

Global Rank:   296

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 (17)

May Challenge 2012

Jewels and Stones, Lucky lucky number, Divisible Pairs, Remember the recipe, A Home for Chef

July Challenge 2012

Chef's Dream, My Fair Coins, Gift Rift

November Challenge 2012

Lucky Balance, A Wonderful Chocolate, Delicious Dishes, Candy Collecting Game, Coin Flip, Jam Board, Many Left, Sridhar Likes Travelling

January Challenge 2015

Queries on the String, Sereja and Number Division 2, Chef and A Large Permutation, Sereja and LCM, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Xor Queries, Ranka, Gcd Queries

February Challenge 2015

Chef and Chain, Time to Study Graphs with Chef, Chef and Strange Formula, Chef and Complex String Coverage, Chef and Strings, Let us play with rank list, Xor Matrix, Jigsaw Puzzle Solving, Chef and Equality

March Challenge 2015

Count Substrings, Chef and Notebooks, Chef and Problems, Sereja and Random Array, Devu and his Class, Sign Wave, Matrix

April Challenge 2015

Count Sequences, Chef and Array, Chef and Interview, Broken Telephone, Inversion sorting, Division of Lands, Chef and Piano Scales, Devus and their voting system

October Challenge 2015

Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Cyclic shifts in permutation, Rupsa and Equilateral Triangle

November Challenge 2015

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

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, Kirito in Memeland, 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, Roses for Alexey, Our Base is Under Attack, Bear and Three Colours

January Challenge 2017

Capital Movement, Cats and Dogs, Sereja and Circles, Sereja and BOX, Chef and Circle, Fantastic Four, Digits Cannot Separate, Reservior, Tourists in Mancunia

June Challenge 2017

Chef and Prime Queries, Saboteur (Challenge), A Good Set, Cloning, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets

November Challenge 2017

Chef and Intersection Line, Product on the segment by modulo , Chef Hates Palindromes, Chef and Subarray Queries, Chef goes Left Right Left, Lovers Gift, Periodic Palindrome Construction, Villages and Tribes

January Challenge 2018

K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers

November Challenge 2018 Division 1

Appy Loves One, Good Median, Magician versus Chef 2

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements

SnackDown 2021 - Online Round 1B

Yet Another Flipping Problem 2, Insider Subsequences, Queens Placement , Largest Laddu, Help Nishant

Total Problems Solved: 129