Problem	foreveralone
User	SJY123
Submission Time	2024-01-09 19:07:35
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

foreveralone.cpp: In function ‘int main()’:
foreveralone.cpp:16:23: error: ‘fb’ was not declared in this scope; did you mean ‘b’?
16 | ans += 2 - fa[a] - fb[b];
| ^~
| b