Life of Phi II
You will be given two integers n and m where GCD(n,m)=1. You have to tell that how many numbers are ...
Circle and Square
Meena and Raju are learning about different shapes. Meena's favourite shape is Circle while Raju lik...
Poltu and Odd Number
Today is Poltu’ first C programming class. And, he needs your help with a programming task. Given tw...
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
Boys in the Assembly
N boys are standing in the assembly. There is a single line only. Boys are denoted by their roll num...
Arko and Special Permutations
Arko is very fond of permutations. He can easily calculate the number of n length permutations. (In ...
Who Ate the Pizza Slices?
Misty’s life is very dramatic. No matter how careful she is, some interesting and sometimes unfortun...
Arya and OR
Little Arya loves to play with numbers. She likes to play in different ways with them. One day she s...
Choco Moco
Aminul & Imran are good friends. Not only friends but also teammates. Their team NSU MeowMax qualifi...
Delete the Array
There is an array of size n. You will be given an integer x. In each move you have to subtract x or ...
Squares Inside Square
Hello , Programmers. There is one thing that I don't like about competitive problem solving, which i...
Red and Green
Suppose, there is an array of N integers. Each index of the array is either red or green. The first ...
Fibonacci Between
Given two numbers L and R, you must print all the Fibonacci numbers between L and R (inclusive). Alt...
Pera in CSEmpur
Who does not like a short and precise problem statement? Atleast everyone in CSEmpur does. You are g...
Erik: The Candyboy - 1
Erik has N candies, and he wants to distribute those candies among his friends. But he has more frie...
Palindromic CSEmpur
Welcome to CSEmpur once again! It has been observed that a good number of inhabitants like palindrom...
Bad Boy Ekhlas
Ekhlas is a bad boy, not the type of bad that you generally admire. When he was little, his primary ...
Gutibaji on Chessboard
Let there be a chessboard of size N×M, and only one bishop in a cell (x,y). How many cells can the b...
Demonic Subset
Lets not waste your time with long tiring problem statement and just go straight to the point. You a...
Divisible by 3
You will be given a string containing digits. You have to say the number of sub strings whose sum is...
Combination Lock
Imagine a Combination Lock - If you set the numbers to a preset combination (passcode), the lock wi...
N Factorial!
I like short descriptions and I think you so too. Let's say you have a number, N. Now try to find th...
Learning New Algorithms Every Day
Shak is a new programmer and he knows nothing about algorithms. He has made a plan and decided to le...
Wizard Duel
Wizard Duel is approaching soon in Hogwarts and the students of the Dueling Club are absolutely thri...
Opera & B2G1
“Don’t practice until you get it right. Practice until you can’t get it wrong” Bangladesh is the ho...
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