Problem	summoning
User	yq
Submission Time	2026-06-26 16:52:32
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

summoning.cpp: In function ‘int main()’:
summoning.cpp:15:10: error: request for member ‘pop_back’ in ‘a’, which is of non-class type ‘int [j]’
15 | else a.pop_back();
| ^~~~~~~~