Problem	catsort
User	Xrh999
Submission Time	2025-12-01 11:04:41
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

catsort.cpp: In function ‘int main()’:
catsort.cpp:14:17: error: expression cannot be used as a function
14 | cout << 2(n - 1);
| ^