摘要:
"hdu1247" Hat’s Words Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 20276 Accepted Submission( 阅读全文
摘要:
线性素数筛+欧拉线性筛(证明) 线性素数筛 c++ int prime[MAXN], tag[MAXN]; void Get_Prime() { Mem0(tag); int cnt = 0; for(int i = 2;i 若x为质数,则phi[x] = x 1 若x%prime[j] == 0, 阅读全文