Prisoners

Let me tell you a story of a dangerous prison. There were N prisoners in that prison. It is guarante...

Table Tennis

One day you have invited Sohel bhai to come to East West University to see an intra-University table...

Divide Candy Again

There are N boxes with candies numbered from 1 to N. The number of candies in the boxes numbered 1 t...

Walking Down The Road

There is an M meter long road with the leftmost point of the road being the 0 meter point and the ri...

Explosion

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

Goku's Tree

Recently Goku has discovered a rooted tree graph. Goku’s tree has N nodes, among them node 1 is the...

Expected Result

A witch has imprisoned Bob in the 1st room of the Central Witchland Hotel. The hotel is weird. All t...

Building the Number

This is a straight-froward problem. You will be given N. You have to find the expected value of bui...

The Lucky Dice

Ray and Evangeline are playing a game named “The Lucky Dice”. In this game, each player tosses up a ...

Sheldon's Obtuse Triangle

We all know Sheldon Cooper from The Big Bang Theory. Recently he got his Nobel Prize. He likes polyg...

Expected Oddness

Alita found a string of n characters where each character of the string is either ‘0’ or ‘1’. The Od...

Random Graphs

This problem is very easy. There’s a graph of $N$ nodes. Each edge $u-v$ ($u >= v ; u = v$ is po...

Earn Your Cupcake

A delicious NxN grid is given to you. All the lattice points of this grid contain a cupcake each exc...