Problem	area_noi
User	gl
Submission Time	2026-01-25 21:21:38
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

area_noi.cpp: In function ‘int main()’:
area_noi.cpp:19:13: error: ‘sum’ was not declared in this scope
19 | cout << sum << "\n";
| ^~~