悩んだが、何とか出来た。
abc179c.py
N = int(input())
cnt = 0
for b in range(1,10**6+1):
if (N-1)//b >= 1:
cnt += (N-1)//b
print(cnt)
More than 3 years have passed since last update.
Register as a new user and use Qiita more conveniently
- You get articles that match your needs
- You can efficiently read back useful information
- You can use dark theme