View Compilation Error

0_0_38989887_15655.cpp: In function 'void read(int&)':
0_0_38989887_15655.cpp:98:14: error: 'getchar_unlocked' was not declared in this scope; did you mean '_getchar_nolock'?
   98 | #define nc() getchar_unlocked()
      |              ^~~~~~~~~~~~~~~~
0_0_38989887_15655.cpp:101:22: note: in expansion of macro 'nc'
  101 |     static char ch = nc();
      |                      ^~
0_0_38989887_15655.cpp: In function 'int main()':
0_0_38989887_15655.cpp:98:14: error: 'getchar_unlocked' was not declared in this scope; did you mean '_getchar_nolock'?
   98 | #define nc() getchar_unlocked()
      |              ^~~~~~~~~~~~~~~~
0_0_38989887_15655.cpp:127:25: note: in expansion of macro 'nc'
  127 |         static char c = nc();
      |                         ^~