FFT
Full form of FFT is Fast Fourier Transformation. Fast Fourier Transformations are widely used for ma...
tufaan Very Easy 80/84/124
Remove Duplicates
The problem is so simple. You are given a string and you have to remove all duplicate characters fro...
Circle and Square
Meena and Raju are learning about different shapes. Meena's favourite shape is Circle while Raju lik...
Very Simple
NOD(X) is the number of divisors of X. For example, NOD(10) is 4. 10 has 4 divisors: 1, 2, 5, and 10...
Squares
Three teams from your university competed in the ICPC Asia Dhaka Regional Contest 2021. Sedulous, Re...
Magic Mirror on the Wall
Kyablakanto and his friend Chalakanti went into the Mirror Room after browsing through the fair. In ...
Poltu and Odd Number
Today is Poltu’ first C programming class. And, he needs your help with a programming task. Given tw...
Hamming Distance
Hamming distance between two binary strings of equal length is the number of mismatches between ever...
Circle, Circle, Circle...
There are 2 circles with the radius od=r and oc=R and they are sharing a common center o. The space ...
math10 Very Easy 17/31/99
Easy Prime!
There are N numbers in an array. You will have Q queries. In each query, you can make 2 operations. ...
K-String
We will call a string K-String if it consists of K distinct characters. For example, if K is 3 then ...
Closest Pair
You will be given N pair of coordinates on a 2D space. You will determine distance between the close...
A Moment of Happiness
Solving a problem during a programming contest is always a moment of happiness. During the CUET CSE ...
How Many Litchis?
Tasnim comes to visit Dinajpur which is very famous for litchi production. Today, she comes to a lit...
Math Very Easy 169/210/469
Can Peter-III Save "MJ" This Time?
Peter-I returns to Dr.Strange as he prepares to use the Macchina to send everyone home. Suddenly, Gr...
Misti Chor
Bhootu likes to eat misti. As he is a mischievous kid, he has decided to steal misti from the nearby...
Is It Perfect
Bob has an initial array D of length n . Alice is a good friend of Bob. So Bob challenges Alice to f...
Mind Flayer Has Attacked Again!
Mind flayer, the shadow monster has attacked the town of Hawkins again. This time, the mind flayer h...
Board of Numbers
Imagine you are working for a software company. The company is interested in making mobile games and...
Very Easy 155/207/506
Poltu and Minimum Spanning Tree
Boltu gave a simple task to his best friend Poltu. You are a good programmer. So, Poltu hired you to...
Chocolate
BUET CSE FEST’23 has come to an end!!!! Chimatu Can’t stop crying as he already started to miss the...
Queries, Queries Everywhere
You are given an array a of length n. You are also given q queries on the array and you have to proc...
The Depressed Guy
There is a guy named "Lucky" who is depressed now. His friend Jack knows why he is depressed. He has...
XOR and the Array
Given an array of N integers, you need to find out the minimum number of integers that must be added...
Digit String
We are giving you a number N and your task is to generate a N digit string where the string reading ...
zobayer Very Easy 55/55/77
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