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COVID-19 Outbreak

COVID-19 outbreak in Atlantis is so bad that the government is forced to lock down the whole country...

Itsy's Magic Cards

Itsy needs your help with her magic cards. Her magic cards grant her special spider-witch powers. Un...

Color The Graph

You are given an acyclic, bidirectional graph with NNN nodes and M edges. The nodes are numbered fro...

Ghosh vs Datta

About two hundred years ago, a serious dispute evoked between the two neighboring colonies of Khulna...

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...

Flow on Tree

Mr. Kaboom has recently learned about maximum flow. Now his friend Mr. Taboom gave him this problem....

War in the Wizarding World

There is a deadly war going on between two countries (Bitland and Byteland) in the wizarding world. ...

Haunting of Herobrine

Herobrine's horror stories are known by many, but only a few dares to speak that name out loud, for ...

Bad XOR 2 (Hard)

So after successfully becoming many people's nightmare, XOR has struck again, this time to haunt you...

Elementary Math

Ellen is teaching elementary math to her students and the time for the final exam has come. The exam...

Explosion

There is a house named Larcana. It is a very weird house .There are exactly N rooms in total and bet...

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...

Zer VS EEE

Zer is a programmer who has a friend named Nir. Nir always shows off how great EEE is. One day Nir c...

Plant Trees, Save Life

There are n students in a school. Some of them are friends with each other. You want to make the sch...

Sofdor Ali's Black and White Tree

Sofdor Ali loves Computer Science. He prefers hexadecimal number system to decimals, just because it...

Birthday Gifts

Today is Luke's birthday. Mr. Phil Dunphy (Luke's father) has thrown a birthday party for him and de...

Stephen, Bob, and Tomato's Canvas

If Stephen Hawking was right, then there is a universe where Bob Ross is a student of Tomato Yoshi. ...

Spanning Tree

There are N nodes in a tree. You can start from any node of that tree and you have to come back to t...

Flow Finder

Last summer, Carla the Cartographer went on an expedition on behalf of the National Center for Posit...

Unfair Robot Race

Two teams of robots, Team A and Team B, are racing in a 2D grid. There will be a total of 6 rounds. ...

Prime Avoider

Mr. X is a friend of Hafiz bhai. Mr. X loves to play with numbers in his leisure but he hates prime ...

Kingdom of Code

Kingdom CODE is the most peaceful place in the universe. King NOVOSH and Queen ALMIDA is ruling this...

MonoMono

You have probably heard of the famous board game, Monopoly. According to Wikipedia, in this game, pl...

Keep Moving

Balurmath is a city which has N interesting tourist spots, which are connected between themselves by...

Traveling Policy of Ajobdesh

In Ajobdesh, there are multiple cities and one of them is considered as the capital city. Obviously,...