Problem	lunchbox
User	sherlockholmes025
Submission Time	2026-01-19 22:19:33
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

lunchbox.cpp: In function ‘int main()’:
lunchbox.cpp:31:3: error: ‘x’ was not declared in this scope
31 | x = v.back();
| ^