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```
use strict;
use warnings;
```

Scalar value @elements[0] better written as $elements[0] at foo.pl lin
+e 13.
Scalar value @filtered[$count] better written as $filtered[$count] at 
+foo.pl line 21.
...
Scalar value @elements[$count] better written as $elements[$count] at 
+foo.pl line 22.
Bareword "easy" not allowed while "strict subs" in use at foo.pl line 
+15.
foo.pl had compilation errors.