Problem	prefixsums
User	chickennn
Submission Time	2026-11-02 15:11:58
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

prefixsums.cpp: In function ‘int main()’:
prefixsums.cpp:16:17: error: ‘sum’ was not declared in this scope
16 | cout << sum[r] - sum[l - 1] << '\n';
| ^~~