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... |
Left Prime Prime numbers are the ones which can only be divided by 1 and the number itself. 2, 3, 5, 7, 11, 13 ... |
Kitchen Decorate Shira has now decided to decorate her kitchen of height H and width W more precisely, she wants to t... |
Birthday Surprise Adnan bhai, Priyom dada and Shuvo bhai are the members of MU_Kheloars. They recently got graduated a... |
The Greedy Mathematician Once upon a time, there lived a man called Mahi the mathematician. He was banned from his kingdom be... |
Secret Meeting The world is terrified by Pandas! After a miraculous chemical explosion, they became smarter; and ev... |
I Am Good 2.0 I am trying to become a good guy, giving contestants as little pain as possible. So, this problem is... |
GCD Plus LCM In this problem you will be given two integers a, b. You have to answer if GCD(a,b)+LCM(a,b)=a+b is ... |
Crypto-Number Walt and Gus have a great rivalry. Recently Gus has developed a cryptographic system. Walt is trying... |
Love Letters! Lately Fahim is getting a lot of love letters. A LOT of love letters. Since he is confused about whi... |
The Easiest Problem Tareq Abrar is a lazy programmer. He has a friend named Aminvai, who is famous for his amazing skill... |
Phi Numbers in Range! In number theory, Euler’s phi function, denoted as ϕ(n), is an arithmetic function which counts the ... |
Equation Equals Hazards You are given the equation, GCD(A,M)=1. You have to determine whether there exists at least one inte... |
Prime Team There are n players standing in a line. Each of the players is assigned a unique jersey number. You ... |
Mr Makor And His Friends Mr Makor has a set S of n integers. He calls a sequence of length k special if every element of the ... |
Paltu, a Prime Lover Note that the memory limit is unusual. Paltu is a good programmer and he loves prime numbers. One da... |
Zacob the Batsman It's known that Zacob is a reliable batsman of LU CSE Cricket Team. Also as long as he is on the cre... |
NAC-SAC Game! (Easy) Akash and Guru are playing an interesting game. They are standing at the two ends of the NAC-SAC bri... |
Is It a Perfect Square? Given some numbers, can you tell, if the product of these numbers are a perfect square or not? A num... |
No Onion, No Cry -Onions make us cry, don't they? They can make us happy too. -How? -Read the statement carefully! I... |
K-Th Root You will be given Q queries. In each query, you will be given two positive integers A and B. You hav... |
Life of Phi The Great Khami is learning Number Theory. He is very excited to know that Euler's Totient Function ... |
Birthday Gift for SJ Today is your best friend SJ’s birthday. You want to buy a birthday present for her. You want to buy... |
Magician's Offer! Rosi Vidmun is a greedy landlord who likes to grab as much land as he can. Currently he has P square... |
Co-Prime Enemy Pair Two integers A and B are known as co-prime or relatively prime if their greatest common divisor GCD ... |