"First, you should always explicitly close any filehandle"
...not to mention checking your filenhandle in the first place ;)

open (INP, "<", "$filename") or die "cannot open input file";
Another thing: you use @ARGV in scalar context - I doubt that this is what you want.

I'm too lazy to be proud of being impatient.

In reply to Re^2: Looking for pointers or optimizations. by nemesdani
in thread Looking for pointers or optimizations. by thmsdrew

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