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
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