diff --git a/seika.rb b/seika.rb
index 676fa3a..8a84b33 100755
--- a/seika.rb
+++ b/seika.rb
@@ -1,24 +1,25 @@
 #!/usr/bin/env ruby
 # -*- coding: utf-8 -*-
 def kotae(a,i)
-  if a == 1||2||4||7
-    if i == 3
-      puts"すごいあたり!"
-    else
-      puts"残念違うよ"
-    end
+  case a
+when 1,2,4,7
+  if i==3
+    puts"すごいあたり!"
+  else
+    puts"ちがうよ"
   end
-
-  if a == 3||5||6
-    if i == 2
-      puts"すごいあたりだよ!"
-    else
-      puts"残念違うよ"
-    end
+when 3,5,6
+  if i==2
+    puts"すごいあたり!"
+  else
+    puts"残念"
+  end
   end
 end
 
 
+
+
 kazu = 1
 
 require'csv'