Problem	area
User	ljx
Submission Time	2026-06-10 14:30:21
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

area.cpp:2:1: error: ‘ios_base’ does not name a type
2 | ios_base::sync_with_stdio(false); cin.tie(NULL);
| ^~~~~~~~
area.cpp:2:35: error: ‘cin’ does not name a type; did you mean ‘sin’?
2 | ios_base::sync_with_stdio(false); cin.tie(NULL);
| ^~~
| sin