diff --git a/2018/AlexeiRakov/1/piramid.rb b/2018/AlexeiRakov/1/piramid.rb
new file mode 100644
index 000000000..a9683fa57
--- /dev/null
+++ b/2018/AlexeiRakov/1/piramid.rb
@@ -0,0 +1,37 @@
+def triangle(n, z, c, q)
+  (0..n).map do |r|
+  	mas = []
+    n = [0]
+    num = [c]
+    left = [z]
+    right = z
+    c = 1
+    k = 1
+    (0..r - 1).step(1) do
+      o = right
+      right = right * (r - k + 1) / k
+      u = right
+      if o + u == q
+        mas.push o
+        mas.push right
+      end
+      left.push right
+      c += 1
+      k += 1
+    end
+    puts "#{left} #{num}"
+    puts "#{mas}"
+  end
+end
+print 'enter the vertex of the triangle:'
+z = gets.to_i
+print 'enter the depth of the triangle:'
+n = gets.to_i
+print 'enter a child:'
+q = gets.to_i
+puts "vertex triangle = #{z}"
+puts "depth triangle = #{n}"
+puts 'parents will be selected from the left'
+c = 0
+require 'colorize'
+triangle(n, z, c, q)