摘要: 转载注明出处:http://www.cnblogs.com/radioteletscope/p/7142762.html 题面: 2818: Gcd Description 给定整数N,求1<=x,y<=N且Gcd(x,y)为素数的数对(x,y)有多少对. 给定整数N,求1<=x,y<=N且Gcd( 阅读全文
posted @ 2017-07-09 20:35 avancent 阅读(195) 评论(0) 推荐(0) 编辑