View Compilation Error

0_0_24235228_21186.cpp: In function 'int check(int, int)':
0_0_24235228_21186.cpp:31:27: error: 'memset' was not declared in this scope
  memset(m, false, memset(m));
                           ^
0_0_24235228_21186.cpp:31:28: error: 'memset' was not declared in this scope
  memset(m, false, memset(m));
                            ^
0_0_24235228_21186.cpp:31:28: error: redeclaration of '<typeprefixerror>memset'
0_0_24235228_21186.cpp:31:27: note: previous declaration '<typeprefixerror>memset'
  memset(m, false, memset(m));
                           ^