Global symbol "$count" requires explicit package name at test.pl line 14.
Global symbol "$first" requires explicit package name at test.pl line 15.
Global symbol "$first" requires explicit package name at test.pl line 16.
syntax error at test.pl line 16, near ");"
Global symbol "$sum" requires explicit package name at test.pl line 18.
Global symbol "$count" requires explicit package name at test.pl line 21.
Global symbol "$sum" requires explicit package name at test.pl line 22.