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...

Milad's Lost Tree

Milad likes trees so much. He has a rooted tree with $n$ vertices each of which has some non-negativ...

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. Dar...

Haunting of Herobrine

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

Explosion

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

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. ...

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. ...

MonoMono

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

Scarlet Speedster

The scarlet speedster of Central City, popularly known as the Flash is fighting an epic battle again...