Problem	competition
User	yuanbin
Submission Time	2026-07-11 10:38:42
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

competition.cpp: In function ‘int main()’:
competition.cpp:21:25: error: ‘vec’ was not declared in this scope
21 | llong sum = accumulate(vec.begin(), vec.end(), 0);
| ^~~