Open xehoth opened 6 years ago
https://blog.xehoth.cc/BZOJ4916/
求 $A = \sum\limits{i = 1} ^ n \mu(i ^ 2), B = \sum\limits{i = 1} ^ n \varphi(i ^ 2)$
https://blog.xehoth.cc/BZOJ4916/
求 $A = \sum\limits{i = 1} ^ n \mu(i ^ 2), B = \sum\limits{i = 1} ^ n \varphi(i ^ 2)$