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use strict; use warnings; use feature 'say';

...
}

__END__

$ ls -goR 1204707

...

1204707/B:
total 0

$ perl 1204707.pl

...
processing ./1204707/A/bb/file3.txt
processing ./1204707/A/bb/file4.txt
processing ./1204707/A/cc/file5.txt

ls -goR 1204707
1204707:
...
-rw-rw-r-- 1 0 Dec  2 08:56 file4.txt
-rw-rw-r-- 1 0 Dec  2 08:56 file5.txt
-rw-rw-r-- 1 0 Dec  2 08:56 file7.txt