秋心无波

摘要： K -Alien's OrganTime Limit:2000MSMemory Limit:65536KB64bit IO Format:%lld & %lluSubmitStatusDescriptionThere's an alien whose name is Marjar. It is an universal solder came from planet Highrich a long time ago.Marjar is a strange alien. It needs to generate new organs(body parts) to figh 阅读全文

摘要： D -DiggingTime Limit:2000MSMemory Limit:65536KB64bit IO Format:%lld & %lluSubmitStatusDescriptionWhen it comes to theMaya Civilization, we can quickly remind of a term called the end of the world. It's not difficult to understand why we choose to believe the prophecy (or we just assume it is 阅读全文

摘要： Round NumbersTime Limit : 4000/2000ms (Java/Other)Memory Limit : 131072/65536K (Java/Other)Total Submission(s) : 11Accepted Submission(s) : 8Problem DescriptionThe cows, as you know, have no fingers or thumbs and thus are unable to play Scissors, Paper, Stone' (also known as 'Rock, Paper, Sc 阅读全文

摘要： 1698. Square Country 5Time limit: 2.0 secondMemory limit: 64 MBThe first arithmetical operation taught to the children of the Square country is the calculation of squares of positive integers. At the first lesson the children are provided with “easy” numbers, calculating a square of which can be don 阅读全文

摘要： 1091. Tmutarakan ExamsTime limit: 1.0 secondMemory limit: 64 MBUniversity of New Tmutarakan trains the first-class specialists in mental arithmetic. To enter the University you should master arithmetic perfectly. One of the entrance exams at the Divisibility Department is the following. Examinees ar 阅读全文

摘要： 1141. RSA AttackTime limit: 1.0 secondMemory limit: 64 MBThe RSA problem is the following: given a positive integer n that is a product of two distinct odd primes p and q, a positive integer e such that gcd(e, (p-1)*(q-1)) = 1, and an integer c, find an integer m such that me= c (mod n).InputOne num 阅读全文

摘要： 1356. Something EasierTime limit: 1.0 secondMemory limit: 64 MB“How do physicists define prime numbers? Very easily: prime numbers are the number 2 and all the odd numbers greater than 2. They may show that this definition corresponds to the mathematical one: 3 is prime, 5 is prime, 7 is prime… 9? 9 阅读全文

摘要： 1261. TipsTime limit: 1.0 secondMemory limit: 64 MBThe favorite resting place of the Ural programmers is Threenland island. There is only one tribulation: dollars and euro don’t go about here. So the tourists are to exchange their money into threets (the currency of Threenland). There go about 1 thr 阅读全文

摘要： 1355. Bald Spot RevisitedTime limit: 1.0 secondMemory limit: 64 MBA student dreamt that he walked along the town where there were lots of pubs. He drank a mug of ale in each pub. All the pubs were numbered with positive integers and one could pass from the pub numbernto the pub with a number that di 阅读全文

摘要： 1049. Brave BalloonistsTime limit: 2.0 secondMemory limit: 64 MBTen mathematicians are flying on a balloon over the Pacific ocean. When they are crossing the equator they decide to celebrate this event and open a bottle of champagne. Unfortunately, the cork makes a hole in the balloon. Hydrogen is l 阅读全文