#!/usr/bin/perl
# your code goes here
my $s = "bla";
$s =~ s/la/ar/;
IyEvdXNyL2Jpbi9wZXJsCiMgeW91ciBjb2RlIGdvZXMgaGVyZQoKbXkgJHMgPSAiYmxhIjsKCiRzID1+IHMvbGEvYXIvOwoKcHJpbnQgIiRzXG4iOwoKJHMgPX4gc3thcn17bGF9OwoKcHJpbnQgIiRzXG4iOwoKJHMgPX4gc3tsYX08YXI+OwoKcHJpbnQgIiRzXG4iOw==