Rivalry Friends Ryo and his girlfriend love to think about challenges. One day his girlfriend gave him a challenge t... |
Is Bita Happy? Bita has learned bitwise-operations recently. She is doing some experiments with these operations no... |
Solve This Giveaway Problem First This problem is straightforward and easy. You will be given two integers N, P and a list L of positi... |
Beauty of AP Solving problems is fun in competitive programming, right? So let’s solve a fun task today too :P. 1... |
Perfect Points Perfect lines are the lines y=mx+c such that m and c are positive integers. Perfect points are the p... |
Composite Facts Let's define two functions F and S: F(n) = 1 + n! S(n,m) = Sum of first m non-prime integers which ... |
M-Sequence A sequence is called M-sequence if after removing zero or more elements from the sequence the GCD of... |
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 ... |
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... |
Joker's GCD Test Joker has a sequence P of n integers. Each two elements in the sequence are pairwise distinct. He de... |
Welcome to Criterion Rounds The team congratulates you for participating in this contest and for being part of the journey towar... |
I Am Good I am trying to become a good guy, because it doesn't take money to become good. So here's a short an... |
Oishi Teacher and Her Naughty Class Oishi teacher has returned to her class after the tiffin break. She noticed that some students who r... |
Dividing the Gifts Today is a very good day in CSEmpur because Tuktuki has bought N gifts! Tuktuki wants to give these ... |