Penguins of Madagascar One day the penguins of Madagascar found a string S... Wait... Wait. Actually the setter of the prob... |
Cash Change You have an unlimited number of cash notes of the following denominations: 1, 5, 10, 50, 100, 500. G... |
LIDS We all know about LIS (Longest Increasing Sub sequence). The task to find the length of the longest ... |
Lexicographical Smallest String There is a string $s$ of length $n$ containing lowercase letters and an integer $k$. Among the lette... |
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 ... |
Passwords Alice wants to extract some passwords from a random string. A password can have any number of charac... |
Make More Money You, the great businessman of TEUB, arrived at ESC land which consists of N cities numbered from 1 t... |
BAPG Russell loves solving math problems and also playing online games. Recently, he has started playing ... |
Lucky Stone Game Alice and Bob are playing a stone game. They consider 4 and 7 as lucky numbers and they like to make... |
Buildings There are n buildings in a row. The height of the i-th building is hi. You have ৳k. It is the amoun... |
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... |
Permutations and Divisors Let P be a permutation of length n where each value from 1 to n occurs exactly once. A subsequence o... |
Make It Big! You are given a number N (10 ≤ N ≤ 2×109). You have to perform exactly two swap operation. You can c... |
Paranoid Trading You have been newly appointed as the accountant of Michael Corleone - the famous mafia boss. Your ta... |
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... |
The Perfect Collection Given an array A of N integers, if we choose any K of these integers and calculate their bitwise XOR... |
Subarray Sum You are given an array having N integers. You have to select at most K positions in the array and re... |
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. ... |
Orchid Division Quido has a square orchard full of various fruit and nut trees. The trees are planted in regular row... |
Third Dimension Mr. J wants to learn about combinatorics. He started reading a book on combinatorics and came across... |