Passwords Alice wants to extract some passwords from a random string. A password can have any number of charac... |
Hardest Problem Ever Prof.Dr.DP is very famous professor. He is expert (actually legendary grandmaster) in Dynamic Progra... |
Buildings There are n buildings in a row. The height of the i-th building is hi. You have ৳k. It is the amoun... |
Assigning Workstations Penelope is part of the admin team of the newly built supercomputer. Her job is to assign work-stati... |
Déjà Vu Thor, the Thunder God is fighting a horde of monsters in a cave. The cave is so narrow that it can b... |
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... |
Permutations and Divisors Let P be a permutation of length n where each value from 1 to n occurs exactly once. A subsequence o... |
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 ... |
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... |
Find the Good Sequence Let's say two numbers are called "good" if their difference is at least 2. Similarly, a sequence is ... |
Jontrona of Liakot Liakot, the king of Cox's Bazar, is currently in a dire situation. His own younger sister Ayesha is ... |
Disturbing Students N students were gathered in front of CSEmpur gate. They wanted to take a tour of the famous CSEmpur ... |
Inversions and Goodbye It's time to say goodbye to CSEmpur, at least for today. And so you wanted to give the citizens of C... |
Flow on Tree Mr. Kaboom has recently learned about maximum flow. Now his friend Mr. Taboom gave him this problem.... |
Flyover in Twinland Rio has become the president of Twinland. Now he wants to develop his country to fulfill his promise... |
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... |
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... |
Dominoes Forever Once when I was little, my father took me to a tobacco shop! It is surprising, but true. He asked th... |
Road Minister Techboy Techboy is appointed as the minister of roads and highway in his country Better-Not-Name-It. Now he ... |
Game of Strings Redoan is very fond of strings. He wants to go on a spree of solving string problems. His own teamma... |
Problem Setter Crisis Competitive Programming is very popular in Leading University. There are many great achievements of ... |
Estimation of Techboy Techboy works in a software company. He codes in Node.js and React. Every now and then he has to giv... |