摘要: //裸的欧拉函数//y=kx//求不同的k有多少#include #define ll long long #define N 40010 using namespace std; ll f[N],n,ans; inline ll read(){ char ch; bool f=false; ll res=0; while (((ch=getchar())'9'... 阅读全文
posted @ 2018-10-16 07:58 Trimsteanima 阅读(152) 评论(0) 推荐(0) 编辑
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