diff --git a/2018/KuikoIhar/1/pas_tri.rb b/2018/KuikoIhar/1/pas_tri.rb
new file mode 100755
index 000000000..160918528
--- /dev/null
+++ b/2018/KuikoIhar/1/pas_tri.rb
@@ -0,0 +1,27 @@
+def pas_tri(h, n)
+  l = [n]
+  [l] + (1..h).map do
+    l = [n] + l[1..-1].map.with_index { |x, i| x + l[i] } + [n]
+  end
+end
+
+def pad(s, n)
+  l = n - s.size
+  ' ' * (l / 2) + s + ' ' * (l - l / 2)
+end
+
+def lines(rows)
+  n = rows[-1].max.to_s.size
+  rows.map { |row| row.map { |x| pad(x.to_s, n) }.join(' ') }
+end
+
+def center(line)
+  n = line[-1].size
+  line.map { |s| pad(s, n) }
+end
+
+puts 'Введите глубину дерева: '
+h = gets.chomp.to_i
+puts 'Введите базовый номер: '
+n = gets.chomp.to_i
+puts center lines pas_tri(h, n)