PasswordsAlice wants to extract some passwords from a random string. A password can have any number of charac...
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Hardest Problem EverProf.Dr.DP is very famous professor. He is expert (actually legendary grandmaster) in Dynamic Progra...
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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 am...
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Assigning WorkstationsPenelope is part of the admin team of the newly built supercomputer. Her job is to assign work-stati...
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Déjà VuThor, the Thunder God is fighting a horde of monsters in a cave. The cave is so narrow that it can b...
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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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Fantastic FoodAs we all know that Alice and Bob just landed in Fantastic World and are going to stay for the next ...
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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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String Is Not That EasyLet's consider a string S which is obtained by concatenating the non-negative integers from 0 to...
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Permutations and DivisorsLet P be a permutation of length n where each value from 1 to n occurs exactly once. A subsequence o...
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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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Remember-RemainderZarin is a sadist. She loves to give problems to her close people. Today she gives you an array cons...
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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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Find the Good SequenceLet's say two numbers are called "good" if their difference is at least 2. Similarly, a ...
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Disturbing StudentsN students were gathered in front of CSEmpur gate. They wanted to take a tour of the famous CSEmpur ...
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Inversions and GoodbyeIt's time to say goodbye to CSEmpur, at least for today. And so you wanted to give the citizens ...
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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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Flyover in TwinlandRio has become the president of Twinland. Now he wants to develop his country to fulfill his promise...
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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 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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