Problem	guessproblem4
User	Potato3218
Submission Time	2023-04-08 00:13:39
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

guessproblem4.cpp: In function ‘const char* solve(int)’:
guessproblem4.cpp:5:9: error: ‘NULL’ was not declared in this scope
5 | return NULL;
| ^~~~
guessproblem4.cpp:2:1: note: ‘NULL’ is defined in header ‘<cstddef>’; did you forget to ‘#include <cstddef>’?
1 | #include "guessproblem4.h"
+++ |+#include <cstddef>
2 |