/in/foo.cc: In function 'void Mid(int, int)':
/in/foo.cc:16:1: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
 while(1);
 ^~~~~
/in/foo.cc:17:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
  for(int i=0;i<=1;i++)
  ^~~
/in/foo.cc: In function 'void Back(int, int)':
/in/foo.cc:28:1: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
 while(1);
 ^~~~~
/in/foo.cc:29:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
  for(int i=0;i<=1;i++)
  ^~~