Problem	prefixsums
User	haiquan
Submission Time	2025-06-23 23:47:25
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

prefixsums.cpp: In function ‘int main()’:
prefixsums.cpp:32:28: error: ‘pfsu’ was not declared in this scope; did you mean ‘pfsum’?
32 | cout << pfsum[k] - pfsu[j-1] << "\n";
| ^~~~
| pfsum