复杂了吧
by ducati @ 2020-05-24 12:09:43
建议，每次在for循环的时候:
for (**int** i=1;i<=n;++i)或
for (**int** i=0;i<n;++i)
by ducati @ 2020-05-24 12:10:37
直接暴力就可以了，数一数即可；这样做有些复杂
by ducati @ 2020-05-24 12:11:00
$\FaKe$
by lyh080125 @ 2020-05-24 12:11:21