Bitmask Problems

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

• By nfssdq
• Bitmask, DP
• Moderate
• 11/20 Solutions
• 103 Submissions
• uDebug

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

• By jackal_1586
• Bitmask, DP
• Easy
• 24/35 Solutions
• 154 Submissions
• uDebug

“There was a break-in of Gringotts Wizarding Bank on 1 May, 1998, during the height of the Second Wi...

• By Sherlock221b
• Bitmask, Combinatorics, Counting, DP
• Moderate
• 7/16 Solutions
• 29 Submissions
• uDebug

Alice came up with a new game. In this game called “Candy Quest”, there is a NxN size 2D grid. In ea...

• By Labib666
• Bitmask, DP
• Moderate
• 8/20 Solutions
• 61 Submissions
• uDebug

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

• By khatribiru, Bhadra, Bishal_G, mihassan
• Bitmask
• Moderate
• 16/18 Solutions
• 144 Submissions
• uDebug

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

• Bitmask
• Moderate
• 14/20 Solutions
• 55 Submissions

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

• By shefin
• Bitmask, DP
• Moderate
• 6/9 Solutions
• 27 Submissions