Problem	prefixsums
User	Caoxizhen
Submission Time	2024-02-25 21:25:38
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

prefixsums.cpp: In function ‘int main()’:
prefixsums.cpp:24:24: error: ‘r’ was not declared in this scope
24 | cout << prefix[r] - prefix[l - 1] << '\n';
| ^
prefixsums.cpp:24:36: error: ‘l’ was not declared in this scope
24 | cout << prefix[r] - prefix[l - 1] << '\n';
| ^