/in/foo.cc: In function 'void gett(char*)':
/in/foo.cc:14:7: warning: unused variable 'b' [-Wunused-variable]
  char b[1000000+1];
       ^
/in/foo.cc:15:10: warning: unused variable 'c' [-Wunused-variable]
     char c[1000000+1];
          ^