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-rwxr-xr-x019.pl12
1 files changed, 12 insertions, 0 deletions
diff --git a/019.pl b/019.pl
new file mode 100755
index 0000000..b0d1cb6
--- /dev/null
+++ b/019.pl
@@ -0,0 +1,12 @@
+#!/usr/bin/perl
+use strict;
+use warnings;
+use DateTime;
+
+my $day = DateTime->new(year => 1901, month => 1, day => 1);
+my $count = 0;
+while ($day->year < 2001) {
+ $count++ if $day->day_of_week == 7 && $day->day_of_month == 1;
+ $day->add(days => 1);
+}
+print "$count\n";