Problem	lunchbox
User	dieunq1309
Submission Time	2023-07-13 15:53:39
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

lunchbox.cpp: In function ‘int main()’:
lunchbox.cpp:39:21: error: ‘arr’ was not declared in this scope
39 | sum = sum + arr[i];
| ^~~