Problem	exponentiate_ex
User	fwyr
Submission Time	2023-02-18 22:29:07
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

exponentiate_ex.cpp: In function ‘__int128 read()’:
exponentiate_ex.cpp:11:23: error: ‘f’ was not declared in this scope
11 | if (c == '-') f = -1;
| ^