Syed Ali Aatif

Practice: 

Factorial, Marbles, Bytelandian gold coins, Life, the Universe, and Everything, Discrepancies in the Voters List, Array Transform, Fierce Battles, Connecting Soldiers, Racing Horses, Root of the Problem, Number of Factors, Sereja and Graph, Pairwise AND sum, Please like me, Chef and Reversing, Game of Numbers, Coprime Triples, Harrenhal, Sereja and Votes, Capital Movement, Cats and Dogs, Tandem, Hussain Set, K-Concatenation, No Minimum No Maximum, Lonely Cycles, Mixi Game, Opposite Cites, Lucky Number Game, Chef and Secret Ingredients, Appy and Contest, Deputy Chef, Chef and Number Game, Chef and a Beautiful Digit, Maximum Remaining, Fencing, Recover the Sequence, Dilemma, Chef and DAG, Drink Slush, Find the XOR, Colorful Balloons, Train or Walk, Back In 2 minutes!!, Chef and Diamonds, Analytics Load Jobs, Stupid Machine, Chef and Rotation, Divide them all, Lasers Everywhere, Lasers Everywhere Alternative, Baba And His Blessings, Good Prefix, Tricky Remainder, Roads in Chefland, Tree difference, Cherry and Pyramid, Red-blue Trees, Counting Graphs, Mode of Frequencies, Even Sequence, Water Transfer, Sort String, Falling Zero, Tsetso Subarrays, Expected Weight, Passing Through!, Nami and the Golden Bell, Checkpoint

Past ZCO Problems: 

Variation

February Challenge 2020 Division 2: 

School of Geometry

March Challenge 2020 Division 2: 

XOR Engine, Pintu and Fruits

April Challenge 2020 Division 2: 

Strange Number, Sell All the Cars, COVID Pandemic and Long Queue

May Challenge 2020 Division 2: 

Triple Sort, Coronavirus Spread, Chef and Bitwise Product, Isolation Centers

March Cook-Off 2020 Division 2: 

Find Your Gift, Box of Chocolates

April Cook-Off 2020 Division 2: 

Lift Requests

March Lunchtime 2020 Division 2 (Unrated): 

Chef Swaps Digits

April Lunchtime 2020 Division 2: 

Another Birthday Present!, Positive Mex, Chef in Fantasy League

May Lunchtime 2020 Division 1: 

Convert the String

DSA Learning Series - Contest 1: 

Factorial, Life, the Universe, and Everything, Lapindromes, Reverse The Number, Smart Phone

June Challenge 2020 Division 1: 

The Tom and Jerry Game!, Chef and Icecream, Covid Sampling (Challenge), Chef and String, Chef and Price Control

August Cook-Off 2020 Division 1 : 

Polygon Relationship

August Lunchtime 2020 Division 1: 

Game on a Strip, Counting Graphs

Quarantest: 

Sum up the count, Hospital Beds, Apocalypse, Apocalypse Revisited

RECode 12.0 (Rated for all): 

Chef and String, Chef and Numbers

January Cook-Off 2021 Division 2: 

Mex Subsequence, Prime Tuples, Maximise Islands

December Lunchtime 2020 Division 1 (Unrated): 

One Zero Swaps

January Lunchtime 2021 Division 1 (Unrated): 

Dreams of Divisibility, Even Sum

November Cook-Off 2020 Division 1: 

Flip the String, Chef and IPC Certificates

October Lunchtime 2020 Division 1: 

Chef Likes Good Sequences, Chef Is Just Throwing Random Words, Cute Chef Gift

November Lunchtime 2020 Division 1: 

Gasoline

September Lunchtime 2020 Division 1: 

Root the Tree

Code Ensemble (Rated for Division 2): 

Cherry and Bits, Priya and AND, Traversing Trees, Help Martha, Priya and Parity

Clash Wildcard: 

Good Pairs, Nobita and Boxes, Oliver, Money Heist, Special Permutation

AC Run: 

Yet Another GCD Problem, Chef and hospitals, Chef and String Conversion, Strange operations

International Coding League 2021: 

BITS and Bitcoins, More Friends

April Lunchtime 2021 Division 1: 

A Special Tree

May Cook-Off 2021 Division 1: 

Permutation Swaps, Double Burgers

May Lunchtime 2021 Division 1: 

Total Components, K-Subarrays

June Cook-Off 2021 Division 1: 

Binary String on Steroids, Battle Royale

June Lunchtime 2021 Division 1: 

From Rational to Binary, HTML Tags, Richie Rich, Tic Tac Toe

August Lunchtime 2021 Division 1: 

Bunny Hops, Just a Graph

September Cook-Off 2021 Division 1: 

Chess Kings Chasing Game, Chef and Pairwise Distances, Fake Swaps

SnackDown 2021 - Online Qualifiers: 

Lucky Number, Maximum Number Of Distinct Elements

September Lunchtime 2021 Division 1: 

Interesting Representation, Subsequence LCS, Alice vs Bob Faceoff

October Cook-Off 2021 Division 1: 

Find the Modulus

October Lunchtime 2021 Division 1: 

Median Rearrangement

SnackDown 2021 - Online Round 1A: 

Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Equal Beauty, Min Max LCM

SnackDown 2021 - Online Pre-Elimination: 

Product Pain

Code Senso Division 1 (Unrated): 

Sardar and GCD, Maximum Damage, Games of Wasseypur, Magic Weed, Farmers of Wasseypur

RECode 20.0: 

Marbles, Glass Stepping Stones, Deok-su and his Debts

November Lunchtime 2021 Division 1: 

Permutation Pairs, Subarray Jumps

December Lunchtime 2021 Division 1: 

In-tree-active Node Coloring, Optimal Sorting, Romantic Reversals, Sleep Technique

January Cook-Off 2022 Division 1: 

Subsegment Divisibility , Merged LIS, Prime Graph

January Lunchtime 2022 Division 1: 

Permutation XOR Sum

February Cook-Off 2022 Division 1: 

Xor Becoming Uncanny, Perfect Permutation, PerMEXuation , Mango Market

February Lunchtime 2022 Division 1: 

Magnet Sort

March Lunchtime 2022 Division 1: 

Mathology, Winter, Adjacency Love, Separate Them All

April Lunchtime 2022 Division 1(Rated): 

Do Not Touch the MEX!!!, Secret Machine Mania

Code Uncode 5.0: 

Maximize Magical Wands, War communication

August Lunchtime 2022 Division 1 (Rated): 

Sort the Array, Tree Coloring, Subtract 12 Operation

Starters 56 Division 1 (Unrated): 

K-Subarrays, Energetic Node(Easy Version), Energetic Node(Hard Version), Palindrome Swaps, Division Sorting, Binary Substitution

Starters 62 Division 1 (Rated for 5 & 6 stars): 

Joint XOR, Sorted Substrings, Make Multiple, Pythagorean Pair

Starters 63 Division 1 (Rated for 5 & 6 stars): 

Distinct Neighbours , Maximize 1s, Count Partitions , Make Length 1, Minimum Absolute Score, Greedy Grid Moves

Starters 65 Division 1 (Rated for 5 & 6 stars): 

Nahaane Jaa, Paisa Double, Binod, Gormint Aunty, Potato to Gold, Lazy Ancestors

Starters 69 Division 1 (Rated till 6-stars): 

Passing Through!, Distinct Sequence, Longest Subarray

Starters 70 Division 1 (Rated till 6-stars): 

Strange Bitwise Operation, X AND Y Tree, Two Counters, Prime Reversal, Frequency Array Retrieval

Starters 73 Division 1 (Rated till 6-Stars): 

Minimum OR Path, Find an integer, Consecutive Xor, First To Last

Starters 74 Division 1 (Rated till 6-Stars): 

Candies, Maximum Xor Sum, Distinct Values, Lcm hates Gcd, Medicine Strength, Minimal Inversions

Starters 75 Division 1 (Rated till 6-Stars): 

Sum of range distinct queries, Chefs Favourite Function, Minimum Replacement, Equal Hamming Distance, Prefix Ones

RECode 25.0: 

The Ancient Tree, Nami and the Golden Bell, Zoro AND Sanji, The Next Pirate, Query of Color, Shanks Test

February Cook-Off 2023 Division 1 (Rated): 

Take Not Less, Alice Potter and OWL, Alice Potter And Dumbledore Army

Starters 77 Division 1 (Rated till 5 Stars): 

Concat Palindrome, K Increment Palindrome

Starters 78 Division 1 (Rated till 6 stars): 

MinAdd, Bitwise Equation, Solve More Problems!

Starters 81 Division 1 (Unrated): 

Beautiful Strings

Code Venture : 

Is this Graph, Weird Fibbo, Crying Child, Fallacy of Wasseypur, Play with subarray

Starters 87 Division 1 (Rated till 6 Stars): 

Inversions of subsequences, AB plus C, One or All

Codeft 3.0: 

DISTINCT ARRAY, MAXIMISING SUM

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Problems Tested (0)

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