Arya’s Counting

Little Arya has learnt to count the highest and the lowest number recently. She can easily find out ...

Sofdor Ali's Magical Blackboard!

Sofdor Ali found interest in mathematics very early in his life. And now, he wants to spread this in...

The Bachelor's Problem

Jony lives in a “Bachelor’s house” with some of his friends. You may assume it as a hostel but it do...

BPL Mubarak!

Bangladesh Premier League is in Sylhet for the first time. Today’s match is Sylhet Sixers vs the Dha...

Byang's Day Out!

Byang and his little brother Kuno loves Cricket. But they never went to the stadium to watch a match...

Be Like Hasib

Hasib, the famous programmer, uses a little game when he teaches Binary Search to his students. He r...

Alayna and Vowels

Alayna loves playing. Every night before going to sleep, she plays different games with Baba. Now Al...

GPA Calculator

Shibli is a very good student. He is very regular and attentive in his classes. He is very serious a...

N'th Prime

In this problem, you will have to print the nth prime number. The first few prime numbers are given ...

Hamming Distance

Hamming distance between two binary strings of equal length is the number of mismatches between ever...

Mysterious Sum

Sohel vai reads newspaper every morning. The newspaper he reads contains some good features includin...

Life of Decimals

Given any circle, if you divide the circumference of that circle with its diameter, you would always...

Correct the Sieve

Sieve of Eratosthenes is a fast algorithm for finding prime numbers in larger ranges. According to W...

Heavy Alphabet

Lily’s father lives in Canada. He comes once in a year. But she thinks everyday about her father. Sh...

Caesar Cipher

Byang wants to write a secret message to his friend. He has recently discovered Caesar Cipher. Caes...

Alice and the Chessboard

It’s Sunday afternoon, and Alice is in her room trying to figure out the rules of the game called Ch...

You Want Chocolate?

Bear Limak is very much fond of chocolate. His mom wants her son to study hard and develop his skill...

Mines

The game of mines is a tricky one. You start with a grid and you click your way through the cells to...

Remember-Remainder

Zarin is a sadist. She loves to give problems to her close people. Today she gives you an array cons...

Minions

Kevin, Stuart and Bob are Minions. They were always in search of a master who is the best criminal i...

I Did Not Do the Assignment

Professor Petr is very angry over some of his students now-a-days for not doing assignment. He wants...

Ice-cream of Montu Mia

Montu Mia is a student of “Omok School”. He likes to eat an icecream everyday. But he also likes to ...

Event Timing

Bob is making a new application for Android phones. Front-end of his app has a button like this: ...

Arithmetic Sequence (Easy)

Arithmetic Sequence is a sequence of numbers where the difference between two consecutive numbers ar...

The Haunted House

Once some friends were walking in a forest on a dirk night. Suddenly they realized that they had los...

The Titan

The Titan, a giant ship started its journey on the dark sea. It was going to the North America. On ...

ASCII Progress Bar

In this problem, you need to write a code that prints an ASCII progress bar. In each test case, you ...

Nusrat's Treat

We all know how much Nusrat loves chocolate! She gets a lot of chocolate from her friends and family...

Simple Operation

Mr. X is a school teacher. He teaches C programming to the students. In every class, he gives some s...

Alayna and Strings

Alayna’s father Baba gifted her a nice alphabet book last month. And now Alayna is in love with alph...

Treat Time

Labiba ma’am wants to give a treat to her favorite student Nafia. But as she now lives abroad, Labib...

Big Factorials

Given an integer N, print the trailing 4 digits of $ N! $ (N factorial). $ N! = N \times (N-1) \tim...