Siina Hakala
- siiha
Finland- Other
- No Active Plan. View Details
Submissions Heat Map
Learning Paths (3)
Practice Paths (3)
Contests (141)
August Challenge 2021 Division 3 (Rated)
Olympics Ranking
SnackDown 2021 - Online Qualifiers
Lucky Number
March Long Two 2022, Division 4 (Rated)
Chef and Races, Increase IQ, The Three Topics, The Rating Dilemma
April Long One 2022, Division 4 (Rated)
Ezio and Guards, The Cooler Dilemma 1, The Cooler Dilemma 2
CodeChef Starters 34 Division 4 (Rated)
Is the Score Consistent, Expiring Bread
April Lunchtime 2022 Division 4(Rated)
Lunchtime, Mario and Transformation, Mario and Bullet
Starters 35 Division 4 (Rated)
Water Requirement, Police and Thief, Jenga Night
Starters 36 Division 4 (Rated)
Who is taller!, Presents for Cheffina, Chef and Chapters, Chef and Bird farm
April Long Two 2022 Division 4 (Rated)
Sasta Shark Tank, Six Friends, Best Coupon
May Cook-Off 2022 Division 4 (Rated)
Chef and Gym, Chef and Masks, Farmers League
Starters 37 Division 4 (Rated)
The Mango Truck, Roller Coaster, Laptop Recommendation , Infernos
May Long One 2022 Division 4 (Rated)
Sugarcane Juice Business, Football Cup, Miami GP
Starters 38 Division 4 (Rated)
Chef gives Party, Get Subscription, Dominant Army, Circular Track
May Lunchtime 2022 Division 4 (Rated)
Bucket and Water Flow , Apples and Oranges, How many unattempted problems, Problems in your to-do list
Starters 39 Division 4 (Rated)
Compress the Video, Recent contest problems, My very 1st contest!, A or B, Chess Ratings
May Long Two 2022 Division 4 (Rated)
Practice makes us perfect, Score High, Total Prize Money, Degree of Polynomial
Starters 40 Division 4 (Unrated)
Difficulty Rating Order, Doubt Support Availability, Whatsapp Messages, Take discount or Not
June Cook-Off 2022 Division 4 (Rated)
Rating Improvement, Playlist
June Long One 2022 Division 4 (Rated)
Chairs Requirement, Subscriptions, Alternate Additions, Equal Strings
Starters 44 Division 4 (Rated)
Biryani classes, Air Hockey
Starters 43 Division 4 (Rated)
Burgers, DNA Storage, Waiting Time
June Long Two 2022 Division 4 (Rated)
Count the ACs, Make all equal using Pairs, Complementary Strand in a DNA, Fitness
July Long One 2022 Division 4 (Rated)
Bidding, Pass the Exam, Chef and Candies
Starters 46 Division 4 (Rated)
Sort the String, Counting Words, MATH1 Enrolment, Group Assignment
Starters 47 Division 4 (Rated)
Chef On Date, Construct N, Minimum Coins, Chess Time
July Lunchtime 2022 Division 4 (Rated)
Interior Design, The Last Levels, Easy Pronunciation, True and False Paper
Starters 48 Division 4 (Rated)
Buy Lamps, Fill The Grid, Passes for Fair, Fill Candies
July Long Two 2022 Division 4 (Rated)
Chef in his Office, To Divide or Not To Divide, Insurance
Starters 49 Division 4 (Rated)
N Buttons 1 Bulb, Is it hot or cold, Maximise the Tastiness, Valid Minimum
Starters 50 Division 4 (Rated)
Discount, Mileage matters, Nearest Court
August Long 2022 Division 4 (Rated)
Sale Season, Maximum Submissions, Make A and B equal
Starters 52 Division 4 (Rated)
AI Analysing Code, WA Test Cases, Air Conditioner Temperature
August Lunchtime 2022 Division 4 (Rated)
Test Averages, Candy Distribution, Equalizing Numbers, Height of Rationals
Starters 53 Division 4 (Rated)
Car Trip, Greater Average, Weights
Starters 54 Division 4 (Rated)
Number of Credits, Ticket Fine
Starters 55 Division 4 (Rated)
Fever, Broken Phone
Starters 56 Division 4 (Rated)
Nearest Exit, Chefland Games, Far Away
September Lunchtime 2022 Division 4 (Rated) (Based on EJOI)
Sleep deprivation, Flip the cards
Starters 57 Division 4 (Rated)
Alice and Marks, Integers that sum to the same value, Even Splits, Non-Negative Product
Starters 58 Division 4 (Rated)
Ranklist Pages, Reach the Target
Starters 59 Division 4 (Rated)
Chef and Happy String , Audible Range, Speciality
Starters 60 Division 4 (Rated)
Expert Setter, Tax in Chefland, Paper Cutting, Card Removal
Starters 61 Division 4 (Rated)
Different Consecutive Characters , Reach on Time, Odd Sum Pair
Starters 62 Division 4 (Rated)
X Jumps, Max minus Min, Test Score
Starters 63 Division 4 (Rated)
Packing Books, Tasty Decisions
Starters 64 Division 4 (Rated)
Mario and the Broken String, Luigi and Uniformity, Distinct Colors, Water Consumption
Starters 65 Division 4 (Rated)
Parity, Candies
November Long 2022 Division 4 (Rated)
Time Complexity, Water Mixing, String Game
Starters 66 Division 4 (Rated)
Binary Battles, Squats, Monopoly in Chefland
Starters 67 Division 4 (Rated)
Minimum Number of Ones, Tour of King
Starters 68 Division 4 (Rated)
Expense List, Bull or Bear, Make AP, Make Money
Starters 71 Division 4 (Rated)
Pet Store, Instagram, Snapchat, Perfect Trio
Starters 72 Division 4 (Rated)
Indivisible, Apples and oranges, Sum it
Starters 73 Division 4 (Rated)
Chef Plays Ludo, Multivitamin Tablets, Lucky Numbers
Starters 74 Division 4 (Rated)
Facebook, Mana Points
Starters 76 Division 4 (Rated)
Redistributing Chocolates, Read Pages, Zero String, 400M Race
February Cook-Off 2023 Division 4 (Rated)
Battery Health, Bi_lindrome!, Netflix
Starters 77 Division 4 (Rated)
Tekken, Tom and Jerry Chase, Codechef Airlines
Starters 80 Division 4 (Rated)
Just One More Episode, Single-use Attack, Running Comparison
Starters 82 Division 4 (Rated)
Reach Home, MIN To MAX
Starters 84 Division 4 (Rated)
Chef and Donation, Elections in Chefland
Starters 85 Division 4 (Rated)
Efficient PAN Linking, Inside The Stadium, IPL Ticket Rush, Can Chef
Starters 86 Division 4 (Rated)
Cricket Match, Chef and Battery , CodeChef Learn Problem Solving
Starters 87 Division 4 (Rated)
Four Tickets, Buy Ten Packets, Return the Change, Existence
Starters 83 Division 4 (Rated)
Chef Eren, Budget of Technex, Couple Game
Starters 88 Division 3 (Rated)
Largest and Second Largest
Starters 89 Division 3 (Rated)
Monopoly, Plus 2 or Minus 1
Starters 90 Division 4 (Rated)
Learning SQL, Printing Binary Array, Favourite Numbers
Starters 91 Division 4 (Rated)
Odd GCD Permutation, Blobby Volley Scores, Bus Seat Numbering, Parking Charges
Starters 92 Division 4 (Rated)
Water Filling, Oneful Pairs
Starters 95 Division 4 (Rated)
Donation Drive, Donation Rewards
Starters 97 Division 4 (Rated)
2000, Best of Two
Starters 98 Division 4 (Rated)
Messi vs Ronaldo, FIND A and B, Airport Management
Starters 99 Division 4 (Rated)
Endless Appetizers, Puzzle Hunt
Starters 100 Division 4 (Rated)
Air Quality Index, Trade Surplus, Chocolate Distribution
Starters 101 Division 4 (Rated)
Work Smarter, Not Harder, Off By One
Starters 102 Division 4 (Rated)
Sports Section, Selling Insurance, Chef and Stocks
Starters 103 Division 4 (Rated)
Sunday Brunch, October Marathon, Dice Number
Starters 104 Division 3 (Rated)
Pizza Cutting, GCD and LCM
Starters 105 Division 4 (Rated)
Bone Appetit, Dracula Eats, Take it Easy
Starters 106 Division 3 (Rated)
Chef Fantasy 11
Starters 107 Division 4 (Rated)
Pending Assignments, Clear Day
Starters 108 Division 4 (Rated)
Rivalry, Chess Pairing
Starters 109 Division 4 (Rated)
Cricket World Cup Qualifier, Best of N Sets, Worth of a Video
August Long 2023 Division 4 (Unrated)
All New CodeChef, Maximum Deliciousness, I Can Use Both Hands!
September Short 2023 Division 4 (Unrated)
Lucky Seven, Slow Start, Mixing Extraordinaire
SQL Contest (Unrated)
First Problem on SQL
Starters 111 Division 4 (Rated)
Reach Codetown, Exams, 404 Not Found
Starters 112 Division 4 (Rated)
Food Costs, Fair Share Settlement, 3 Logicians Walk into a Bar, Max Nutrition
Starters 113 Division 3 (Rated)
Maximum Score
Starters 115 Division 4 (Rated)
Decorating Christmas Tree, Chocolate Distribution, Codechef Round
Starters 116 Division 4 (Rated)
Hattrick, ORST , Minimum Wage, Access Control
Starters 117 Division 4 (Rated)
Weapon Choice, Yearly Phone
Starters 118 Division 4 (Rated)
Subset GCD, Literacy Rate, International Education Day!
Starters 119 Division 4 (Rated)
Advitiya, Judged, Cookie Day
Starters 120 Division 4 (Rated)
Valentines Contest, Valentine Gifts
Starters 123 Division 4 (Rated)
Room Allocation, Algomaniac Finals
Starters 122 Division 4 (Rated)
Healthy Sleep, Problem Reviews, Man of the Match
Starters 124 Division 4 (Rated)
Binary Parity, Summer Time, Cricket Tournament
Starters 125 Division 4 (Rated)
Overspeeding, 50-50 Rule, Fake Certificate
Starters 126 Division 4 (Rated)
AC Please, Dice Game 3
Starters 127 Division 4
The Ides of March, Superincreasing, Extreme Basketball
Starters 129 Division 4 (Rated)
Football Training, Pep Bidding, Ballon d Or
Starters 130 Division 4 (Rated)
Make Equal, Alternating Binary String, Giant Wheel, Swapping Marks Digits
Starters 131 Division 3 (Rated)
Gotta Catch Em All, Dice Deception
Starters 132 Division 3 (Rated)
Change Please
Starters 134 Division 4 (Rated)
Origin, Morning Run, Money Double, Rock Paper Scissors
Starters 135 Division 3 (Rated)
Invert And Equalize, Football Ties
Starters 137 Division 3 (Rated)
Spell Splice
Starters 138 Division 4 (Rated)
Heat Wave
Starters 139 Division 4 (Rated)
Distribute Cookies, Television Channels
Starters 140 Division 4 (Rated)
Yoga Day, Yoga Class
Starters 141 Division 4 (Rated)
Nearly Equal, Lucky Clover
Starters 142 Division 4 (Rated)
Writing Speed, Penalty Shoot-out
Starters 143 Division 4 (Rated)
International Justice Day, Maximum Coins
Starters 146 Division 4 (Rated till 5 stars)
Knockout tournament, No Winner, Olympics 2024
Starters 147 Division 4 (Rated till 5 stars)
Gold Coins 101
Starters 150 (Rated)
Find Multiset State, IOI 2024, Ratio By 2
Starters 151 (rated)
Weightlifting
Starters 152 (Rated)
Chess Olympiad, Range Minimize
Starters 154 (Rated)
Add 1 or 2 Game, Calorie Limit, Coldplay Tickets
Starters 155 (Rated)
Chef and Parole, GCD to 1 (Easy), Rectangled
Starters 156 (Rated)
Sweets Shop, Long Queue
Starters 157 (Rated)
Not-too-far Replacement, Glass Prices, Non-matching Name
Starters 158 (Rated)
Diwali Discount, Even vs Odd Divisors
Starters 159 (Rated)
Icecream and Cone, Card Game
Starters 160 (Rated)
Too Many Oranges, Movie Snacks
Starters 161 (Rated)
Moneymaking
Starters 162 (Rated)
Calorie Intake, Assignment Score
Starters 163 (Rated)
Chef and Socks, Binary Sum, Minimum Types
Starters 165 (Rated)
Christmas Cake, Poster Perimeter, Bulk Discount
Starters 166 (Rated)
Chefland Library, Christmas Gifts, Merry Christmas!
Starters 167 (Rated)
Happy New Year!
Starters 168 (Rated)
Can You Bench, Big Achiever
Starters 169 (Rated)
Opposite Attract, Entry Check
Starters 170 (Rated)
Access Code Equality, Minimum Bottles
Starters 171 (Rated)
Squid Game - Piggy Bank
Starters 172 (Rated)
Time Machine, Small Palindrome
Starters 173 (Rated upto < 2700)
Time Penalty
Starters 174 (Rated)
Too Much Homework!, Bigger is Better
Starters 175 (Rated)
Assignment Due, Technex Tickets
Starters 177 (Rated)
Triangle Checking, 2 Boxes