Giorgos Giapitzakis

Practice: 

Small factorials, Enormous Input Test, Turbo Sort, GCD2, ATM, Life, the Universe, and Everything, A Very Easy Problem!, Sum of numbers, The Lead Game, Array Transform, Yet Another Number Game, Cutting Recipes, Pairing Chefs, Holes in the text, A Prime Conjecture, Ciel and A-B Problem, Count of Maximum, Absolute value of a number, Number of Odd and Even Numbers, Double Strings, Jewels and Stones, Closing the Tweets, Racing Horses, Coin Flip, Buy1-Get1, Root of the Problem, Packaging Cupcakes, Approximately, Your Name is Mine, Elephant, Factorisation, Sereja and Vectors, Polo the Penguin and the Test, Uncle Johny, Number Mirror, Mike and Task Packages, Farmer Feb, Chef and Remissness, Chef-jumping, Divide the Cake, Ups and Downs, Approximately II, The Smallest Pair, Copy-Paste, Tanu and Head-bob, Chef and easy problem, Maximum Average Sub-Array, Devu and Adding Two Numbers, Mangalyaan-2, Sereja and Votes, Bread, Just multiply, Gcd Queries, Chef and Interview, Lucky Four, Broken Telephone, Easy Sum, Piyush and Greeting Cards (Easy), Chef and Memory Limit, Juniors and Blackboard(EASY), Factorial , Prime Generator, Add Two Numbers, Find Remainder, First and Last Digit, Sum of Digits, Reverse The Number, Helping Chef, Total Expenses, Id and Ship, Valid Triangles, Grade The Steel, Gregorian Calendar, GCD and LCM, Second Largest, Small Factorial, Primality Test, Finding Square Roots, The Block Game, Chain of Doughnuts, Chef and Dolls, Chef and his Sequence, Pinocchio and Lampwick - Part 1, Make XOR zero, Chef and Table Tennis, Count Steps in Matrix, Greedy puppy, Puppy and game, MinMax Queries, Number game, N Boy and Palingrams, N Boy and Sum, Who dares to be a millionaire, Wolverine and XOR, The Source Code Limit Challenge, Stockholm Encryption, Chef and Chetris, Chef and the Wildcard Matching, Chef And Operators, Exam results, Chef and Subarrays, QUIZZZ, Odd Divisors, Chef and Big Soccer, Cycle Race, Kitchen Timetable, Better Maximal Sum, K-good Words, Art, Sharing Candies, N different palindromes, Bear and Shop Trip, Bear and AB, Find the Maximum Value, Chef And Easy Xor Queries, Partition Count, Circular Intervals, Chef and War with Taran (Challenge), Chef and Eid, Mix Mix Game, GCD Partitions

July Challenge 2015: 

Bread

September Challenge 2015: 

Chain of Doughnuts, Count Steps in Matrix, Chef and Chetris

October Challenge 2015: 

Count Subarrays

December Challenge 2015: 

Chef and the stones

August Cook-Off 2015: 

Chef and the Wildcard Matching

September Mega Cook-Off 2015: 

Forgotten Language

July Lunchtime 2015: 

Greedy puppy, Puppy and game

August Lunchtime 2015: 

Minimum Maximum

September Lunchtime 2015: 

Sum of palindromic numbers

October Lunchtime 2015: 

emitL

January Long Challenge 2016: 

Rupsa and the Game, Chef and Making Triples, Chef and Time Machine, Devu and Perfume

February Challenge 2016: 

Chef-Detective

March Challenge 2016: 

Palindromic substrings

May Challenge 2016: 

Chef and Balls, Forest Gathering, Laddu

July Challenge 2016: 

Andrash and Stipendium, Chefland and Electricity

January Cook-Off 2016: 

Chef and Fruits

February Cook-Off 2016: 

Puppy and Sum

March Lunchtime 2016: 

Simple Statistics

May Lunchtime 2016: 

Akhil And Colored Balls

July Lunchtime 2016: 

Drumpf for President!, Lumpy - The Bus Driver

Intoxia: 

The Source Code Limit Challenge

NU Coding: 

Same Modulo !, Only one by one

Code-Adda Practice Contest: 

learn DP, Non-Fibonacci Number

Mirror of 1st NYU ProgNova: 

Getting Milk Tea

Past ZCO Problems: 

Matched Brackets, Round Table, Tournament, Little Red Riding Hood, Chewing, Video Game, SUPW, Smart Phone, IPL, Break Up, Variation, Covering

CodeBar: 

Count The Prime, Semusa Cipher

Coder's Legacy 2016: 

Batmobile Upgradation

Cresense: 

Counting Triplets

LoC Competitive Programming Marathon: 

Bipin vs Balajiganapathi , Acronym counter

SRM Codejam [Qualifiers]: 

Introductory Problem, Help Sumit, Vipul - The Bracket Checker, Simple Multiplication

May LoC Competitive Programming Marathon: 

Teaching Tree, Hungry Harish

July LoC Competitive Programming Marathon: 

Longest Even Subarray, Forever alone

August LoC Competitive Programming Marathon: 

Bob and square field, Moves like a jagger

March Challenge 2017: 

Cooking Schedule, Xenny and Alternating Tasks, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix

Past INOI Problems: 

Triathlon, Table Sum, Calvins Game, Sequence Land, Periodic Strings, Free ticket

May Challenge 2017: 

Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers, Chef and Subsequences

June Challenge 2017: 

Chef and Prime Queries, A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets

July Challenge 2017: 

Chef and Sign Sequences, Pishty and tree, Tree Expectancy, Whats in the Name, Calculator , IPC Trainers

August Long Challenge 2017: 

Chef and Rainbow Array, Chef And Fibonacci Array, Chef and Mover, Palindromic Game, Greedy Candidates

April Lunchtime 2017: 

Bear and Segment 01

May Lunchtime 2017: 

Prefix Inversions

June Lunchtime 2017: 

Maximum Unique Segment, Two Numbers

August Lunchtime 2017: 

Mathison and the Dynamo shuffle, Mathison and pangrams

October Lunchtime 2017: 

Buggy Calculator, Maximum Number

Codiyapa: 

Who Win The Game, NeoDrishti, Sheldon And Wolowitz, Robot Battle

LoC Aug 2017: 

Princess and Beauty , Always Late

NPL Qualifier: 

Group of Socks, Game of Factors, Count The Valleys

July Challenge 2018 Division 1: 

Reach Equilibrium, Chef and War with Taran (Challenge), No Minimum No Maximum, Gears

Da-vinci Code: 

MAXIMUM PRODUCT, SHOPPING

Innerve Summer Code Challenge: 

Big Multiplication, Friends Meeting, Good Subsets, Krish and Containers, Jeetu and Circles, Mathematical Equation, Skill Input

ketek[i] QuickMatch 22: 

Find Components(keteki)

December Challenge 2020 Division 1: 

Hail XOR, Square Root of LCA Convolution, Calculus, Linear Combination, String Operations, Positive Prefixes, Even Pair Sum

Learning Sprint: 

Area of Donuts, Reverse a string

SnackDown 2021 - Online Qualifiers: 

Lucky Number, Maximum Number Of Distinct Elements

SnackDown 2021 - Online Round 1A: 

Round Robin Ranks , Dance Moves, Equal Beauty, Min Max LCM

May Long One 2022 Division 1 (Unrated): 

Mystical Numbers, The Magical Stone

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