--- /dev/null
+#!/usr/bin/perl
+
+use warnings;
+use strict;
+
+my $start = time;
+for (my $n = 0; $n < 100; $n++) {
+ my $f = $n - 25;
+ my $tmp = 50 - $n;
+ my $b = $tmp * $tmp;
+
+ my $ans = $n * $n;
+ my $ans2 = sprintf("%02d%02d",$f,$b);
+ #my $ans2 = 100*$f+$b;
+ print "$n^2 = $ans => $ans2\n" unless $ans == $ans2;
+}
+my $end = time - $start;
+
+print "Execution Time: $end";