MSIS! Do you know what MSIS is? MSIS is the abbreviation for Maximum Sum Increasing Subsequence. It is a s... |
Paying Bills Mued is finally home for summer vacation after surviving yet another semester of the mighty CS Under... |
Video Game Shefin is playing a game. In this game there are N buildings numbered from 1 to N. Each building has... |
Divisible LCM You have a sequence a1, a2, a3, …, an of n integers and q queries. In each query, you are given ... |
Interesting Parenthesis Parentheses sequence of length 2n is the sequence containing exactly n opening parentheses «(» and e... |
m-Beautiful Numbers An m-Beautiful Number is a number which is divisible by $m$ and the sum of the digits is also divisi... |
Reverse Hash Binary strings are strings that can only have 0 or 1 as the characters. The hash value of a string i... |
Make It Big! You are given a number N (10 ≤ N ≤ 2×109). You have to perform exactly two swap operation. You can c... |
No GCD You are given N integers. Each integer is square free (i.e. it has no divisor which is a square numb... |
Burger King Every day, more than 11 million guests visit BURGER KING® restaurants around the world. And they do ... |
Smart Feature Phone 2 Alice worked in CIA. Right now he need to send an encrypted message to the headquarter(HQ) of CIA. ... |
Aliens 19 February 2020, Unidentified flying object (UFO) has captured student’s attention on top of the CS... |
A Journey Towards One Given N. You can perform 3 types of operations: Increase N by 1. Decrease N by 1. Divide N by 2, av... |
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... |
Subarray Sum You are given an array having N integers. You have to select at most K positions in the array and re... |
OCD Returns! This problem author has OCD (obsessive–compulsive disorder). One day his teacher gave him an array o... |
The Perfect Collection Given an array A of N integers, if we choose any K of these integers and calculate their bitwise XOR... |
LIDS We all know about LIS (Longest Increasing Sub sequence). The task to find the length of the longest ... |
Maximum Sum Little Jimmy loves to play with numbers. One day he was playing with a number sequence. In his game,... |
Sticking Pins You are sticking pins on a 2D board at N given coordinates. However, since you are not very good at ... |
Very Dirty String Strings are difficult, most of the contest programmers say this and try to avoid string algorithms. ... |
Third Dimension Mr. J wants to learn about combinatorics. He started reading a book on combinatorics and came across... |