Problem	installingapps_ex
User	ForgottenDragon
Submission Time	2025-12-08 20:45:46
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

installingapps_ex.cpp: In function ‘int main()’:
installingapps_ex.cpp:61:47: error: expression cannot be used as a function
61 | K -= aa[u].second();
| ^