jcjkyx110507 @ 2023-11-24 20:56:43
#include<bits/stdc++.h>
using namespace std;
int main(){
unsigned long n,ans=0;
cin>>n;
for(int i=1;i<=n;i++){
long long f=1;
for(int j=1;j<=i;j++)
f*=j;
ans+=f;
}
cout<<ans<<endl;
return 0;
}by xiaoshumiao @ 2023-11-24 21:00:04
@jinzhilong 这题需要用高精度（即答案会超出 unsigned long long 的范围），建议看题解学习。
by NO_OI_NO_LIFE @ 2023-11-24 21:04:15
@xiaoshumiao 你好，请问一下：怎么认证2023 CSP-J 1=
by jcjkyx110507 @ 2023-11-24 21:06:04
@xiaoshumiao 可否展示一下您的代码
by NO_OI_NO_LIFE @ 2023-11-24 21:06:56
@jinzhilong 请上OI-Wiki自己去学习或看题解
by danlao @ 2023-11-24 21:07:24
@zyh0516_lucky https://www.luogu.com.cn/discuss/735166
by jcjkyx110507 @ 2023-11-24 21:08:17
@zyh0516_lucky https://www.luogu.com.cn/user/setting#information
应该在这！
by NO_OI_NO_LIFE @ 2023-11-24 21:08:20
@xiaoshumiao 是因为地区原因吗，我一直显示洛谷没有更新，可是3k都说了已经更新了
by jcjkyx110507 @ 2023-11-24 21:10:07
@zyh0516_lucky 可否发一下链接
by danlao @ 2023-11-24 21:11:37
@zyh0516_lucky https://help.luogu.com.cn/manual/luogu/account/award-certify
by NO_OI_NO_LIFE @ 2023-11-24 21:12:28
@jinzhilong @yaodiguoan thx我在CCF名单查询上还没有显示，还是再等等吧