--- /dev/null
+#!/usr/bin/perl -w
+
+use strict;
+use v5.30;
+
+my $valid;
+my @d;
+while (<>) {
+ chomp;
+ push @d, [ /(\d+)/g ];
+ if (@d == 3) {
+ for my $c (0 .. 2) {
+ my @t = sort { $a <=> $b } ($d[0][$c], $d[1][$c], $d[2][$c]);
+ $valid++ if $t[0]+$t[1] > $t[2];
+ }
+ @d = ();
+ }
+}
+
+say $valid;