Problem	prefixsums
User	yuxiangt
Submission Time	2026-02-09 22:08:10
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

prefixsums.cpp: In function ‘int main()’:
prefixsums.cpp:10:20: error: ‘n’ was not declared in this scope
10 | int a[N+1],pre[n+1];
| ^
prefixsums.cpp:12:5: error: ‘pre’ was not declared in this scope
12 | pre[0]=0;
| ^~~
prefixsums.cpp:20:31: error: expected primary-expression before ‘<’ token
20 | cout<<pre[R]-pre[L-1];<"\n";
| ^