Bitmask Problems

You are given N integers. Each integer is square free (i.e. it has no divisor which is a square numb...

nfssdq Bitmask, DP Moderate 18/34/146

The protagonists of this problem are two great programmers of a certain institution Omanush and Ordi...

jackal_1586 Bitmask, DP Moderate 28/40/162

"There was a break-in of Gringotts Wizarding Bank on 1 May, 1998, during the height of the Seco...

Sherlock221b Bitmask, Combinatorics, Counting, DP Moderate 8/20/36

Alice came up with a new game. In this game called "Candy Quest", there is a NxN size 2D g...

Labib666 Bitmask, DP Moderate 13/25/73

Mued is finally home for summer vacation after surviving yet another semester of the mighty CS Under...

imranbinazad Bitmask, DP 48/57/180

Bikpiks are very small aliens. Day by day they are becoming very dangerous for human being. They liv...

shibly Bitmask, ConvexHull, DP, Geometry Moderate 4/4/86

In mathematics, especially in set theory, set A is a subset of set B, or equivalently B is a superse...

khatribiru, Bhadra, Bishal_G, mihassan Bitmask Hard 17/20/91

A super shop sells only 26 items, labeled them from ‘A’ to ‘Z’. The shop stores the list of products...

Bitmask Moderate 18/25/65

You are given an array AAA of n integers (A1A_1A1​, A2A_2A2​, ..., AnA_nAn​) and some queries. In ea...

nahidhasan98 Bitmask, Trie Moderate 49/68/194

There is a shop named Chocolove in the Codeland. There are many chocolates in the shop. Each chocola...

shefin Bitmask, DP Moderate 7/10/21

This problem is very easy. As my mood is not so good, I will not elaborate the statement unnecessari...

tanu_RUET Bitmask, DP Easy 4/35/198

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...

flash_7 Bitmask, Hashing Moderate 47/66/312

Scientists from the planet Krypton have figured out a way to grow artificial sugar in space. They ha...

Tanmoy_Datta Bitmask, Implementation, Math Moderate 16/23/46

As you know earth is affected by corona virus. Situation becomes worse day by day .Almost 80% people...

recycle_bin BinarySearch, Bitmask Moderate 21/24/64

Mr. Hikiko passed his Eid without shopping because of ongoing lockdown. Now, Govt. removed the lockd...

Riaz_BSMRSTU Bitmask, DP Moderate 7/10/32

Welcome to Osim's maze! Unfortunately, you are in the maze right now and you want to come outside th...

Muhimin_Osim Bitmask, DP 7/10/35

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

prodip_bsmrstu Bitmask, DataStructure, Hashing, LowestCommonAncestor, Tree Moderate 6/10/43

You are given N piles of stones. The piles are numbered 1 to N from left to right. Each pile contain...

Nafis_Shhriar Bitmask Moderate 47/60/143

You have a sequence a1, a2, a3, …, ana_1,~ a_2,~ a_3,~…, ~a_na1​, a2​, a3​, …, an​ of n integers and...

adnan_toky Bitmask, DP, NumberTheory Moderate 1/2/3