Hashing Problems

Chikongunia is an epidemic in Dhaka right now. Many people are affected by this. But the problem is,...

• By ridowan007
• Hashing
• Hard
• 121/182 Solutions
• 1628 Submissions

Prof. Ying Zang has an affinity for symmetric objects. Perhaps that is why she loves palindromes. So...

• By forthright48
• Hashing
• Moderate
• 105/155 Solutions
• 913 Submissions

Shikamaru is the most brilliant student of his class. He is very good at Mathematics. Mr. Asuma is t...

• By fsshakkhor
• Hashing, MOSAlgorithm, NumberTheory
• Hard
• 56/121 Solutions
• 628 Submissions

Well, I will not waste your time and go straight to the problem. You are given an array A of numbers...

• By IamHot
• Hashing
• Moderate
• 17/31 Solutions
• 146 Submissions

In a popular computer game, Game of Palindromes also known as GOP there is a city called Palindesh. ...

• By ghazanfar
• Counting, DP, Hashing, String
• Moderate
• 39/58 Solutions
• 126 Submissions

You will be given a string s of length n. Consider substring s[i, n] (where i is the starting positi...

• By emrul_mu
• Hashing, SuffixStructure
• Hard
• 22/28 Solutions
• 121 Submissions

You are given a string of length L. You have Q queries. In each query, you will be asked to either u...

• By tahmedge, IamHot
• DataStructure, Hashing, SegmentTree
• Hard
• 13/30 Solutions
• 122 Submissions

The king of Stringland is employing an elite force of undercover agents to protect the kingdom from ...

• By SMAN2901
• BinarySearch, Eertree, Hashing, SuffixStructure
• Moderate
• 20/22 Solutions
• 123 Submissions

In Strangeland, people name their child in a cute way. I'm sure you already know the way by the prob...

• By skmonir
• BruteForce, Hashing, KnuthMorrisPratt, String
• Hard
• 48/111 Solutions
• 362 Submissions

You are given two connected graphs G1G_1G1​ and G2G_2G2​. Both of the graphs have NNN vertices and N...

• By fsshakkhor
• Hashing, KnuthMorrisPratt
• Hard
• 14/33 Solutions
• 113 Submissions

We heard you like trees. But this problem has no relation to trees being frozen. :D You are given a ...

• By souravvv
• DisjointSets, Hashing
• Hard
• 17/21 Solutions
• 131 Submissions

Palindrome is a string which reads the same from both right to left and left to right. Formally, a s...

• By Mohaimin66
• Eertree, Hashing
• Hard
• 22/27 Solutions
• 146 Submissions

Bob is the owner of a shop named "Color Maker". He has 256 types of watercolor in his shop...

• By shefin
• BinarySearch, Hashing
• Hard
• 14/19 Solutions
• 172 Submissions

You’ll be given two matrix M1 and M2 and another integer K. The size of both M1 and M2 are N*N and e...

• By flash_7
• Bitmask, Hashing
• Hard
• 47/66 Solutions
• 312 Submissions

Tony works in a multinational technology company named Voogle LLC. The employees of Voogle follow ce...

• By akash.kuet
• DP, Hashing, Implementation
• Hard
• 40/94 Solutions
• 349 Submissions

Asfia's daughter just turned 5. She is looking for a school to get her admitted. Like every other pa...

• By ishtupeed
• Hashing, Math
• Moderate
• 55/75 Solutions
• 274 Submissions

There is a kingdom called DomKi. DomKi has N city and N-1 two-way road. Each city is numbered with 1...

• By prodip_bsmrstu
• Bitmask, DataStructure, Hashing, LowestCommonAncestor, Tree
• Hard
• 6/10 Solutions
• 43 Submissions

You will be given an array of integers AAA. You have to count the number of subarrays\textbf{subarra...

• By Hasinur_
• Hashing
• Moderate
• 30/49 Solutions
• 239 Submissions

You all remember Fabby, the princess of Byteland. People of Byteland are waiting for the biggest cel...

• By Hasinur_
• Hashing, Trie
• Moderate
• 11/17 Solutions
• 241 Submissions