Problem	helloworld
User	yhkhoo
Submission Time	2023-12-16 11:52:01
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

helloworld.cpp: In function ‘int readInt()’:
helloworld.cpp:3:15: error: ‘getchar_unlocked’ was not declared in this scope
3 | char ch = getchar_unlocked();
| ^~~~~~~~~~~~~~~~