/in/foo.cc: In function 'int main()':
/in/foo.cc:12:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(int i=n;i>=1;i--)
  ^~~
/in/foo.cc:19:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   cout<<-1;
   ^~~~