Generation GapThere are n people standing in a queue. The age of the ith person is ai. The more the age gap betwe...
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LIDSWe all know about LIS ( Longest Increasing Sub sequence). The task to find the length of the longest...
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BuildingsThere are n buildings in a row. The height of the i’th building is hi. You have ৳k. It is the amoun...
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EkupaiHacker robot Ekupai is trying to hack a supercomputer. He needs a cheat code X to hack this computer...
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Burger KingEvery day, more than 11 million guests visit BURGER KING® restaurants around the world. And they do ...
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Lexicographical Smallest StringThere is a string s of length n containing lowercase letters and an integer k. Among the letters tho...
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A Journey Towards OneGiven N. You can perform 3 types of operations: Increase N by 1. Decrease N by 1. Divide N by 2 (O...
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Counting MurgisEver since that wicked thief took away some of her murgis (hens, that is), Meena was ever anxious th...
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Third DimensionMr. J wants to learn about combinatorics. He started reading a book on combinatorics and came across...
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Diagonal SumGiven an N*N size matrix, you have to re-arrange the elements of the matrix in such a way that the d...
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I Hate Combinatorics!Rick and Morty are being hunted by the galactic government. They ran away to the cell dimension. The...
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String Is Not That EasyLet’s consider a string S which is obtained by concatenating the non-negative integers from 0 to 102...
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Pathetic Interview IIYou all know about the story of Pathetic Interview-I. Today, I am sharing a story of my close friend...
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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...
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Convert String Into PalindromeA palindrome is a word, number, phrase, or other sequence of characters which reads the same backwar...
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Train HijackYou and your friend Daneliya Tuleshova are planning to hijack a train. Your friend will go inside a...
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Flow on TreeMr. Kaboom has recently learned about maximum flow. Now his friend Mr. Taboom gave him this problem....
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PasswordsAlice wants to extract some passwords from a random string. A password can have any number of charac...
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Road Minister TechboyTechboy is appointed as the minister of roads and highway in his country Better-Not-Name-It. Now he ... |
Is This a Give-Away?Once there lived an ancient mage named Farabi. He could always give perfect weather forecast. He nev...
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Subset ANDYou are given an array A of n integers and an integer k. You need to find if there is any non-empty ...
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Birthday GiftsToday is Luke’s birthday. Mr. Phil Dunphy (Luke’s father) has thrown a birthday party for him and de...
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Find the Good SequenceLet’s say two numbers are called “good” if their difference is at least 2. Similarly, a sequence is...
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EasyThis problem is very easy. As my mood is not so good, I will not elaborate the statement unnecessari...
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Naming ConventionTony works in a multinational technology company named Voogle LLC. The employees of Voogle follow ce...
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Polygon Construction (Hard)Meera in going to picnic with her friends. They are going to have lots of fun. They will be doing va...
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No GCDYou are given N integers. Each integer is square free (i.e. it has no divisor which is a square numb...
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OCD Returns!This problem author has OCD (obsessive–compulsive disorder). One day his teacher gave him an array o...
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Easy Sequence 1Let’s define an easy sequence F. Where $ F(1) = 1 $ $ F(2X) = F(X)^2 + 1 $ $ F(2X+1) = F(X) \time...
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Easy Sequence 2Let’s define a easy sequence F. Where $ F(1) = 1 $ $ F(2X) = F(X)^2 + 1 $ $ F(2X+1) = F(X) \times...
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The Game of RocksAlice and Bob have come up with a new game. Bob gives Alice a NxM grid that contains N rows and M c...
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Gaaner KoliThe protagonists of this problem are two great programmers of a certain institution Omanush and Ordi...
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