Problem	ballmachine
User	Ok
Submission Time	2026-08-15 00:05:16
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

ballmachine.cpp: In function ‘std::vector<int> find_structure(int)’:
ballmachine.cpp:42:12: error: ‘N’ was not declared in this scope
42 | node[0] = N - 1;
| ^