2018年1月27日
HDU3501欧拉函数极重要推论
摘要： 推论：小于N且与N互质的所有数的和（包括1）为 N*vola（N）/2 Given a positive integer N, your task is to calculate the sum of the positive integers less than N which are not c 阅读全文
posted @ 2018-01-27 01:10 TTTCoder 阅读(229) 评论(0) 推荐(0)
poj2356鸽舍原理
摘要： The input contains N natural (i.e. positive integer) numbers ( N <= 10000 ). Each of that numbers is not greater than 15000. This numbers are not nece 阅读全文
posted @ 2018-01-27 01:04 TTTCoder 阅读(306) 评论(0) 推荐(0)