diff --git a/umko.rb b/umko.rb
old mode 100644
new mode 100755
index 8176cb4..7fd6a1b
--- a/umko.rb
+++ b/umko.rb
@@ -1,3 +1,83 @@
-#!/usr/bin/ruby
-
+#!/usr/koeki/bin/ruby
+# -*- coding: utf-8 -*-
 print "aaaaaaaaaaaaaaaaaaaaaaaa"
+kobushi = 0
+
+print"じゃんけんしようぜ\n"
+
+print"最初はグーじゃんけん(1:グー2:チョキ3:バー)\n"
+kobusi = gets.chomp!.to_i
+
+srand
+cpu = rand(3) + 1
+
+if kobusi == 1
+  if cpu == 1
+    print"ぽん\n"
+    print"グー\n"
+    sleep(2)
+    print"グー\n"
+    sleep(1)
+    print"あいこー\n"
+  elsif cpu == 2
+    print"ぽん\n"
+    print"グー\n"
+    sleep(2)
+    print"チョキ\n"
+    sleep(1)
+    print"キミのかちー\n"
+  elsif cpu == 3
+    print"ぽん\n"
+    print"グー\n"
+    sleep(2)
+    print"パー\n"
+    sleep(1)
+    print"キミのまけー\n"
+  end
+elsif kobusi == 2
+  if cpu == 1
+    print"ぽん\n"
+    print"チョキ\n"
+    sleep(2)
+    print"グー\n"
+    sleep(1)
+    print"キミのまけー\n"
+  elsif cpu == 2
+    print"ぽん\n"
+    print"チョキ\n"
+    sleep(2)
+    print"チョキ\n"
+    sleep(1)
+    print"あいこー\n"
+  elsif cpu == 3
+    print"ぽん\n"
+    print"チョキ\n"
+    sleep(2)
+    print"パー\n"
+    sleep(1)
+    print"キミのかちー\n"
+  end
+elsif kobusi == 3
+  if cpu == 1
+    print"ぽん\n"
+    print"パー\n"
+    sleep(2)
+    print"グー\n"
+    sleep(1)
+    print"キミのかちー\n"
+  elsif cpu == 2
+    print"ぽん\n"
+    print"パー\n"
+    sleep(2)
+    print"チョキ\n"
+    sleep(1)
+    print"キミのまけー\n"
+  elsif pcu == 3
+    print"ぽん\n"
+    print"パー\n"
+    sleep(2)
+    print"パー\n"
+    sleep(1)
+    print"あいこー\n"
+  end
+end