摘要： POJ 3126, Prime PathTime Limit: 1000MSMemory Limit: 65536KTotal Submissions: 3134Accepted: 1911DescriptionThe ministers of the cabinet were quite upset by the message from the Chief of Security stating that they would all have to change the four-digit room numbers on their offices. — It is a matter 阅读全文

摘要： Prime GapTime Limit: 5000MSMemory Limit: 65536KTotal Submissions: 6070Accepted: 3454DescriptionThe sequence of n − 1 consecutive composite numbers (positive integers that are not prime and not equal to 1) lying between two successive prime numbers p and p + n is called a prime gap of length n. For e 阅读全文

摘要： Sum of Consecutive Prime NumbersTime Limit: 1000MSMemory Limit: 65536KTotal Submissions: 12073Accepted: 6767DescriptionSome positive integers can be represented by a sum of one or more consecutive prime numbers. How many such representations does a given positive integer have? For example, the integ 阅读全文