Alexander
- 7★achvanov
Russia- Student
- Saint Petersburg State University
- No Active Plan. View Details
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Ratings System Update
(2024-05-15 22:00:00)Ratings System Update
(2022-12-20 00:00:00)Learning Paths (0)
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Contests (43)
April Challenge 2020 Division 2
Strange Number, Squared Subsequences, Ready Bitwise, Sell All the Cars, COVID Pandemic and Long Queue
May Challenge 2020 Division 2
Coronavirus Spread, Isolation Centers
March Cook-Off 2020 Division 2
Mysterious Sequence, Find Your Gift, Box of Chocolates, Maximize Letter Beauty, Escape the Tree
May Cook-Off 2020 Division 2
Chef and Recipe, Chef, Chefina and Their Friendship, Roads in Chefland
March Lunchtime 2020 Division 2 (Unrated)
Maximize LCM, Strip in a Tree!, Chef Swaps Digits, Good Prefix
May Lunchtime 2020 Division 1
Absolute Min Max, Convert the String, Tree difference
June Challenge 2020 Division 1
The Tom and Jerry Game!
July Challenge 2020 Division 1
Missing a Point
August Challenge 2020 Division 1
Subsequence Frequency Counting, Smallest KMP, Chef and Wedding Arrangements
July Cook-Off 2020 Division 1
What Is This, a Crossover Episode, The In-XOR-able Task, Even-tual Reduction, OR-thodox Distinction, Path-etic Products
August Cook-Off 2020 Division 1
Polygon Relationship
June Lunchtime 2020 Division 1
Maximum AND, Gold Mining, Square Submatrices
CodeChef Starters 19 Division 2 (Rated)
P Equal To NP, Indivisible Permutation, The Alternating Sum, Distinct Elements
CodeChef Starters 20 Division 1 (Unrated)
Finding Pairs, Stable Sequence, Weird Values, Genes, Brutal-Xors, Chef and Pal
C.O.D.E.R.S Division 2 (Rated)
The One On The Last Night, The One Where No One is Ready, The One with Ross Wedding
FizzBuzz Division 2 (Rated)
Magical Planks, Clean The Sequence, Substring Minimum Function, Can_Reach, Kingdom Attack
November Lunchtime 2021 Division 1
Subarray Jumps
December Challenge 2021 Division 2 (Unrated)
Increasing String , Yet Another Tree Problem, Check Mate, Valleys and Hills, Rock Paper Scissors, Pyramid Traversal, List of Lists, Utkarsh and Placement tests, Squares Counting
December Lunchtime 2021 Division 1
Optimal Sorting, Romantic Reversals, Sleep Technique
CodeChef Starters 22 Division 1 (Unrated)
Merging Binary Strings, Equal LIS
Infinity 2k21 Division 2 (Rated)
Marbles, Tug of War, Dalgona Treat
January Long 2022 - I, Division 1 (Unrated)
Keplers Law, Sequence Master, Prime in a binary string, Retrieve back the Array, Covid Spread, Chef and Riffles
February Long 2022 - I, Division 1 (Unrated)
Binary Base Basics, Bitwise Blend, Remove Adjacent, N Queens Puzzle Solved !, Chef and the Hair Salon
Starters 49 Division 1 (Unrated)
Students-Far From Hostel, N Buttons 1 Bulb, Split The String, High Frequency, Is it hot or cold, Maximise the Tastiness, Monks, Valid Minimum
Starters 72 Division 1 (Rated till 5-Stars)
Indivisible, Apples and oranges, N Triplets, Good Sequence, Good Arrangement, Sum it, No sequence, XOR Tree
Starters 73 Division 1 (Rated till 6-Stars)
Minimum OR Path, Find an integer, Consecutive Xor
February Cook-Off 2023 Division 1 (Rated)
Take Not Less, Alice Potter And Dumbledore Army
Starters 77 Division 1 (Rated till 5 Stars)
Sort a String, Concat Palindrome, K Increment Palindrome, Three Numbers
Starters 78 Division 1 (Rated till 6 stars)
MinAdd, Bitwise Equation, Balanced Suffix, Valid Expression, Passing Marks, Candy Store, Good Turn, Solve More Problems!, Divisible Subarray Counting
Starters 79 Division 1 (Rated till 5 Stars)
Love Squares Hate Cubes, K-Beautiful Subarrays, Mountain, One Stone or Two Stones, Split or Decrease, Add smallest prime factor, Distinct Opposite Sums, Better Deal, Ageing
Starters 80 Division 1 (Rated till 5 stars)
Permutation Subsequence, Three-People Contests, c8kbf and Tree, Prefix Permutation, Eat Rock!
Starters 82 Division 1 (Rated till 6 stars)
Find eX, Difference Matrix
Starters 84 Division 1 (Rated till 6 Stars)
MEX Sequences, SUM OR, Max count of 1, Digit Operation, Chef And Adjacent Sums
Starters 86 Division 1 (Rated for All)
Least Size, Minimum Operation, String Game , Largest Y
Starters 87 Division 1 (Rated till 6 Stars)
Inversions of subsequences, AB plus C, One or All
Starters 88 Division 1 (Rated till 6 Stars)
Maximum And Or, Chef and Asteroids, Minimize the Bits
Starters 89 Division 1 (Rated till 5 Stars)
Positive or Negative Subarrays, Subarray Removal, Two Averages, Tree Queries, Evil Infection
Starters 91 Division 1 (Rated till 6 Stars)
XOR & Sum, Limited Shopping, Odd GCD Permutation, Chef Odd, Maximum Sum Permutation
Starters 92 Division 1 (Rated till 6 Stars)
Rectangular Tiling, Dividing into Groups, Beautification of array, Distance Coloring
Starters 93 Division 1 (Rated for All)
Thank U, Next, NASA, Greedy, Bloodline, Motive
Starters 94 Division 1 (Rated till 5 Stars)
Place The Number, Possible or Not, Search for 404, Special Operation, The Vowel Matrix, Rank Queries
Starters 95 Division 1 (Rated till 6 Stars)
Chef and Moves of GCD, Boxes, Transfusion Chain, Break This Array
Starters 98 Division 1 (Rated till 6 Stars)
3-Blast Palindrome, Ball Distribution
Starters 99 Division 1 (Rated till 6 Stars)
Segment Three, Maximize Ones, Two Piles, Yet Another Bitwise Problem, Exclusion-Inclusion
Starters 105 Division 1 (Rated till 6 Stars)
Ghoul-icious Goodies, Spooky Sequences, Dull Operation, Wishcraft
Starters 108 Division 1 (Rated till 6 Stars)
Palindromic Prime Numbers, Fair Distribution, Continuous Subarrays, Multiple of 9
Starters 114 Division 1 (Rated till 6 Stars)
Game on Array, Chef and Tag, Rock-Paper-Scissors
Starters 123 Division 1 (Rated till 6-Stars)
Minimum And Maximum I, Yet Another Alice Bob Game, Trial of the Conqueror, Minimum And Maximum II
Starters 125 Division 1 (Rated till 6-Stars)
Bucket Game, Manhattan Xor, Binary Minimal
Starters 126 Division 1 (Rated till 6 Stars)
Tree Distance Set, Freedom, LCD, Triangular Swaps
Starters127 Division 1
ABC Conjecture, Anti-Triangle
Starters 130 Division 1 ( Rated till 6-Stars)
Updating A, Make Equal, Costly Swapping, Append Array, Good Binary String
Starters 133 Division 1 (Rated till 6-Star)
ABC Conjecture 3, Powered Parameters, Too Far For Comfort, Too Far For Comfort (Easy Version)
Starters 134 Division 1 (Rated till 6-Stars)
Count Good RBS, Chef and Bit Tree, Origin, Prison Escape, 3out1in