Efficient Construction on Mars
Elon Musk has constructed N cities numbered from 0 to N−1 on Mars. He initially planned to construct...
Holy Tree
What is a tree? A tree is a bidirectional connected graph with no cycle. In a tree, we can create ...
Knapsack
You have a backpack that can carry a maximum weight of C. You will also be given a set of items, the...
DP Moderate 21/30/72
Help Chokro
Pias and Chokro are good friends. Pias's birthday is coming soon. So, Chokro wants to gift Pias an a...
Find NSUPS
Given a string s, find the number of subsequence in s which forms the word "NSUPS". A subsequence is...
Easy Sequence 1
Let’s define an easy sequence F. Where: F(1)=1 F(2X)=F(X)2+1 F(2X+1)=F(X)×F(X+1)+2 Here X is a posit...
Make It Big!
You are given a number N (10 ≤ N ≤ 2×109). You have to perform exactly two swap operation. You can c...
Happy Sub-Sequence
Recently Alex has participated in a programming contest. He became 1st runner up. He couldn't solve ...
I Hate Combinatorics!
Rick and Morty are being hunted by the galactic government. They ran away to the cell dimension. The...
Cutting Bamboos
There are $n$ bamboos in a row. Khan the bamboo cutter is going to cut them all one by one. He can d...
Naughty Subsequence - V2.0
Mahib loves ‘Naughty Subsequence’-s. He will give you an array of characters ara[0,1,...,n-1] that c...
mashfiqur404 DP, DataStructure Very Easy 29/33/67
Erik: The Candyboy - 1
Erik has N candies, and he wants to distribute those candies among his friends. But he has more frie...
Game of Palindromes
In a popular computer game, Game of Palindromes also known as GOP there is a city called Palindesh. ...
Sofia
Sofia has just arrived in Bangladesh. Rather asking it some dumb questions, lets give it a maze prob...
Mina and Raju
Everyone know about Mina & Raju. They are siblings as well as good friend. The friend-circle of Mina...
Happiness
If you have a Tk 100 in your wallet, what would you do? You might have couple of ways to spend that ...
Burger King
Every day, more than 11 million guests visit BURGER KING® restaurants around the world. And they do ...
LIDS
We all know about LIS (Longest Increasing Sub sequence). The task to find the length of the longest ...
Video Game
Shefin is playing a game. In this game there are N buildings numbered from 1 to N. Each building has...
My Small Number
You are given two integers N and M. Find another integer X divisible by M that has the same number o...
Game of Tic-Tac-Toe
Alice and Bob is a playing a game of tic-tac-toe, to be precise a variant of tic-tac-toe called Nota...
Harry Potter and the Vault of Gringotts
"There was a break-in of Gringotts Wizarding Bank on 1 May, 1998, during the height of the Second Wi...
Gaaner Koli
The protagonists of this problem are two great programmers of a certain institution Omanush and Ordi...
Alice in Candyland
Alice came up with a new game. In this game called "Candy Quest", there is a NxN size 2D grid. In ea...
OCD Returns!
This problem author has OCD (obsessive–compulsive disorder). One day his teacher gave him an array o...
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