Problem	ballot
User	LXYSGP
Submission Time	2025-07-06 14:00:37
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

ballot.cpp: In function ‘int main()’:
ballot.cpp:41:25: error: use of ‘prev’ before deduction of ‘auto’
41 | auto prev = prev(it);
| ^~~~