NIkolay kuzivanov

• Username: 6★koskaku
• Country:  Russia
• Student/Professional:Student
• Institution:Tomsk Polytechnic University
• 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)

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No. of Contests Participated: 32

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October Challenge 2016(2016-10-17 15:00:00)

Global Rank:   580

Cheated in:   

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(2016-10-17 15:00:00)

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2243 (+224)RatingProvisional
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October Challenge 2016(2022-12-20 00:00:00)

Global Rank:   580

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?

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Contests (32)

November Cook-Off 2014

Most Distant Points, Brackets, Petersen Graph

September Challenge 2014

Chef and Rainbow Array - 2, Chef and Left-Right, Chef and sequence, Fun with Rotation

December Challenge 2014

XOR with Subset, Chef and Apple Trees

February Challenge 2015

Chef and Chain, Time to Study Graphs with Chef, Chef and Strange Formula, Chef and Strings, Let us play with rank list, 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, Chef and Piano Scales

May Challenge 2015

Devu and his three Hands, Devu and binary String, Chef and Prime Divisors, Set Difference , Chef and new recipe, Chef and Cake

June Challenge 2015

Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons

July Challenge 2015

Addition and Multiplication, Bread, MasterChef, Na2a and lucky stone, Chef and Cube

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

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

December Challenge 2015

Chef and the stones, Plane Division, Oracle Devu and Longest Common Subsequence, Chef and Filters

February Cook-Off 2015

Fit Squares in Triangle, Strategy for the World Cup

March Cook-Off 2015

How to Minimize a String, How to Repaint a Fence

June Cook-Off 2015

Strange operations

July Cook-Off 2015

Cops and the Thief Devu, Maximize Disjoint Pair Sum, Path containing K Nodes

August Cook-Off 2015

Chef and the XORed Number , Chef and the Number Sequence, Chef and the Wildcard Matching

October Cook-Off 2015

Palindrome Pairs, Word Stem, Almost Sorted Permutation

December Cook-Off 2015

Chef and Subarrays, Chef and Queries

September Lunchtime 2015

Many Lists, Sum of palindromic numbers

January Long Challenge 2016

Sereja and Salesman, Chef and Inflation, Rupsa and the Game, Churu and Balls, Cyclist Race, Chef and Time Machine, Devu and Perfume

March Challenge 2016

Sereja and Two Strings 2, Palindromic substrings, maximize the sum, Parity tree, Chef And Special Dishes

May Challenge 2016

Sereja and GCD 2, Easy Queries, Chef and math, Chef and Balls, Forest Gathering, Chef and Amazingness of Numbers, Chef and Big Soccer, Laddu

June Challenge 2016

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

July Challenge 2016

Andrash and Stipendium, Chef and Segments, Chef and Tetris, Chef and special numbers, Evaluate the polynomial, Chef and Robots Competition, Chefland and Electricity, Defend the Recipe

August Challenge 2016

Chef and His Garden, Chef and Circle Run, Chef and Chocolate, Chef and Round Run, Funny gnomes, Maximum Grid

September Challenge 2016

Chef and Friends, Dividing Machine, Chef and digits of a number, Faded Palindromes, JosephLand, Chef and calculation

October Challenge 2016

Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs, Chef and Two String

January Cook-Off 2016

Chef and Destruction, Chef and Fruits

May Cook-Off 2016

Phantasialand

July Cook-Off 2016

Chef and Proportion, Chef and Numbers

September Cook-Off 2016

Lazy Jem, The Lost Arithmetic Sequences, Counting Strings

Total Problems Solved: 156