Problem	pilot
User	pengzhehan62
Submission Time	2023-06-27 17:29:20
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

pilot.cpp: In function ‘int main()’:
pilot.cpp:18:16: error: ‘N’ cannot be used as a function
18 | cout<<N(N-1)/2<<endl;
| ^