Act of Random Kindness (Hard)Sammy and Meera liked adventures a lot. Once in a while they used to set out adventures. This time t...
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Plant Trees, Save LifeThere are n students in a school. Some of them are friends with each other. You want to make the sch...
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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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Kingdom - Great Roads of DestinyShin wants to be the “Great General of the Heaven”. It is his dream. But becoming a “Great General o...
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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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C++ Vector SimulationArray is an important data structure in computer science. It is also very important when it comes fo...
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404 Setter Not Found! 😲Given a 2D 4-connected grid. Each cell contains a value and an identifier. Values can be propagated ...
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Wakanda ForeverWe all know that Thanos has erased half of the population of the universe. Earth’s population was al...
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The Archipelago of MirpurThe archipelago of Mirpur consists of N islands. The famous architect PogPog was hired to connect al...
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Poltu and GraphPoltu has got a graph with N nodes and M edges. Every edge has a weight. There can be multiple edges...
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Freezing TreesWe heard you like trees. But this problem has no relation to trees being frozen. :D You are given a ...
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Team FormingBen is the instructor of a camp. He is forming several teams consisting of the students of the camp....
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Metro Rail BlocksThe city of Dhaka is experiencing the construction of metro rails. Imagine one such metro rail spans...
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Yet Another XOR ProblemGiven a rooted tree with N nodes where each node has a value, find a pair of nodes (u, v) so that u ...
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Change in ArrayYou will be given an array of length N. Then there will be Q queries. Each query will contain four i...
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Bored??“Avoid touching your face, particularly your eyes, nose or mouth to prevent the virus from entering ...
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