Problem	lunchbox
User	bluesky2113
Submission Time	2024-08-03 09:27:04
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

lunchbox.cpp: In function ‘int main()’:
lunchbox.cpp:24:3: error: ‘M’ was not declared in this scope
24 | M -= arr[i];
| ^