Easy Prime! There are N numbers in an array. You will have Q queries. In each query, you can make 2 operations. ... |
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 ... |
Co-Prime Enemy Pair Two integers A and B are known as co-prime or relatively prime if their greatest common divisor GCD ... |
Left Prime Prime numbers are the ones which can only be divided by 1 and the number itself. 2, 3, 5, 7, 11, 13 ... |
Chowdhury Saheb & the Numbers You like short description of problems? Me too! Let's go to an easy problem. You are given an array ... |
Birthday Surprise Adnan bhai, Priyom dada and Shuvo bhai are the members of MU_Kheloars. They recently got graduated a... |
Unique Relief Thanos has now figured out how to visit all the houses in the flood-affected area. However, now he h... |
Oh Functions Let’s define functions f and g as: f(x) = 2 * ( f(x-1) + g(x-1) - 1 ) * ( f(x-1) + g(x-1) - 3 ) + 12... |
Phi Numbers in Range! In number theory, Euler’s phi function, denoted as ϕ(n), is an arithmetic function which counts the ... |
A GRE Themed Contest Problem Sadman and Najkin were solving a GRE math problem, Rejbah another friend of theirs listened to that ... |
A Lack of Common Divisors Given a positive integer N, determine how many of the integers between 1 and N are co-prime with N. ... |
Love Letters! Lately Fahim is getting a lot of love letters. A LOT of love letters. Since he is confused about whi... |
Equation Equals Hazards You are given the equation, GCD(A,M)=1. You have to determine whether there exists at least one inte... |
Laali Vs Bessie One day Raju discovered USACO and from that day he would spend all his time solving problems. Laali ... |
Exponential Growth You will be given two integers X and N, you have to calculate XN modulo 1000000007. |
Relatively Prime Given a positive integer N, determine how many of the integers between 1 and N are co-prime with N. ... |
Mystery of Fibonacci Fibonacci sequence is a recursive sequence that depends on the following definition: Fib(N) = Fib(N-... |
Fast Co-Prime Two numbers A and B are called co-prime if the only common positive factor of the two numbers is 1. ... |
Correct the Sieve Sieve of Eratosthenes is a fast algorithm for finding prime numbers in larger ranges. According to W... |
Trick or Trees One day, Raju was out roaming in the woods,when he suddenly stumbled upon a large garden. There were... |
Largest Prime A positive integer number n is called a prime number, if it is only divisible by 1 and n itself, whe... |
Meena O Dosto Sele Dosto sele Dipu and his friends used to disturb Rita Apu everyday on her way to school singing , " র... |
Switches Technology is going ahead very fast. How can we know what will we get in future? One day you met a g... |
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... |
Find the primes? For a positive integer n, let’s define a function f: f(n) = sum of positive integers less than n whi... |