Problem	password
User	Xiaoyang
Submission Time	2024-03-09 11:59:35
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

password.cpp: In function ‘int main()’:
password.cpp:29:14: error: ‘pre’ was not declared in this scope
29 | rep(i,1,n+1)pre[i]=pre[i-1]+a[i];
| ^~~