Cash Change
You have an unlimited number of cash notes of the following denominations: 1, 5, 10, 50, 100, 500. G...
Buildings
There are n buildings in a row. The height of the i-th building is hi​. You have ৳k. It is the amoun...
Passwords
Alice wants to extract some passwords from a random string. A password can have any number of charac...
Find the Good Sequence
Let's say two numbers are called "good" if their difference is at least 2. Similarly, a sequence is ...
Game of Strings
Redoan is very fond of strings. He wants to go on a spree of solving string problems. His own teamma...
Diagonal Sum
Given an N×N size matrix, you have to re-arrange the elements of the matrix in such a way that the d...
Hardest Problem Ever
Prof.Dr.DP is very famous professor. He is expert (actually legendary grandmaster) in Dynamic Progra...
Subset AND
You are given an array A of n integers and an integer k. You need to find if there is any non-empty ...
Misti Chor
Bhootu likes to eat misti. As he is a mischievous kid, he has decided to steal misti from the nearby...
BAPG
Russell loves solving math problems and also playing online games. Recently, he has started playing ...
Who Ate the Pizza Slices?
Misty’s life is very dramatic. No matter how careful she is, some interesting and sometimes unfortun...
Find NSUPS
Given a string s, find the number of subsequence in s which forms the word "NSUPS". A subsequence is...
Generation Gap
There are n people standing in a queue. The age of the ith person is ai. The more the age gap betwee...
Ekupai
Hacker robot Ekupai is trying to hack a supercomputer. He needs a cheat code X to hack this computer...
Fantastic Food
As we all know that Alice and Bob just landed in Fantastic World and are going to stay for the next ...
Train Hijack
You and your friend Daneliya Tuleshova are planning to hijack a train. Your friend will go inside a...
Darth Vader and 3PO on a Tree!
Did you watch Star Wars yet? No? You should in your free time. Now back to Darth Vader and 3PO. Dart...
Problem Setter Crisis
Competitive Programming is very popular in Leading University. There are many great achievements of ...
Permutations and Divisors
Let P be a permutation of length n where each value from 1 to n occurs exactly once. A subsequence o...
Estimation of Techboy
Techboy works in a software company. He codes in Node.js and React. Every now and then he has to giv...
Birthday Gifts
Today is Luke's birthday. Mr. Phil Dunphy (Luke's father) has thrown a birthday party for him and de...
Remember-Remainder
Zarin is a sadist. She loves to give problems to her close people. Today she gives you an array cons...
Lexicographical Smallest String
There is a string $s$ of length $n$ containing lowercase letters and an integer $k$. Among the lette...
Dominoes Forever
Once when I was little, my father took me to a tobacco shop! It is surprising, but true. He asked th...
Jontrona of Liakot
Liakot, the king of Cox's Bazar, is currently in a dire situation. His own younger sister Ayesha is ...
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