Problem	guessproblem4_ex
User	bz
Submission Time	2024-01-04 07:48:33
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

guessproblem4_ex.cpp: In function ‘const char* solve(int)’:
guessproblem4_ex.cpp:27:12: error: ‘NULL’ was not declared in this scope
27 | return NULL;
| ^~~~
guessproblem4_ex.cpp:2:1: note: ‘NULL’ is defined in header ‘<cstddef>’; did you forget to ‘#include <cstddef>’?
1 | #include "guessproblem4_ex.h"
+++ |+#include <cstddef>
2 | const char* solve(int T) {