/in/foo.cc:8:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning(disable:4996)
 
/in/foo.cc: In function 'int bfs(int, int)':
/in/foo.cc:136:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^