Powerful Number Efa loves numbers. She thinks a number is powerful if it can be expressed in the form xy where x and... |
Yet Another Hello World The greatest company, Pied Piper, is developing encryption systems. The company has already built Md... |
Phi Numbers in Range! In number theory, Euler’s phi function, denoted as ϕ(n), is an arithmetic function which counts the ... |
GCD and Sum Congratulations! You’ve been hired in “Buggy Software Ltd.” And you’ve been already given your first... |
The Story of Two Friends There are two friends F1 and F2 in a city. They both are student of FCB High School. Also, they resi... |
The Game Is Back On Moriarty is bored again. When he gets bored, the only thing he wants to do is play with Sherlock. So... |
Is Bita Happy? Bita has learned bitwise-operations recently. She is doing some experiments with these operations no... |
Christmas Tree Professor Rio has an amazing Christmas tree. Unlike other trees, this Christmas tree has some specia... |
Chowdhury Saheb & the Numbers You like short description of problems? Me too! Let's go to an easy problem. You are given an array ... |
Magic Number Count Magic number is an integer number, which is only divisible by itself and total number of divisor wil... |
Choice Is Yours For not participating on contests regularly, Hasnaine (read Has9) has decided to kill Santo. But nob... |
Arko and Special Permutations Arko is very fond of permutations. He can easily calculate the number of n length permutations. (In ... |
Co-Prime Enemy Pair Two integers A and B are known as co-prime or relatively prime if their greatest common divisor GCD ... |
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... |
Magician's Offer! Rosi Vidmun is a greedy landlord who likes to grab as much land as he can. Currently he has P square... |
Playing With Aladdin Aladdin is a fictional character and the titular protagonist of Walt Disney Pictures' 31st animated ... |
Easy Factorial? It is time to show your performance on number theory. Why so late? Come to the point. You are given... |
Bi-Element Subsequence You are participating in a game show. In the final round, the host pulls up a large sequence of posi... |
Poltu and Trailing Zero Poltu gives a problem to his friend Boltu. The description is given below: You are given an integer ... |
Tom Is a Good Mentor Today is the first day of the little mouse Jerry at school. Famous mathematician Tom is his teacher.... |
How Many Pairs of LCM? A Common Multiple of two integers a and b is an integer X, such that both a and b divides X. A numbe... |
GCD, Divisor, Count! I like short statements and you should too so here's the statement without further ado You are give... |
Kotlin Heroes The International Collegiate Programming Contest is an algorithmic programming contest for college s... |
A GRE Themed Contest Problem Sadman and Najkin were solving a GRE math problem, Rejbah another friend of theirs listened to that ... |
Quarantine!!! China is one of the strongest countries in the world in the sense of economy and military technology... |