diff --git a/debug-j2318-1.rb b/debug-j2318-1.rb
index c7857ba..627a71a 100755
--- a/debug-j2318-1.rb
+++ b/debug-j2318-1.rb
@@ -7,6 +7,6 @@
 
 print "数を入れてね: "
 kazu = gets.to_i
-if kazu  == 0
+if kazu % 2 == 0
   print "偶数だよ!"
 end
diff --git a/debug-j2318-2.rb b/debug-j2318-2.rb
old mode 100644
new mode 100755
index 82f3528..e8bdc6a
--- a/debug-j2318-2.rb
+++ b/debug-j2318-2.rb
@@ -9,9 +9,10 @@
 while gyou > 9
   retsu = 1
   printf("%2d | ", retsu)
-  while retsu > 9
+  while retsu >9
     printf("%4d ", (retsu+=1)*gyou)
   end
   gyou += 1
   puts
-end
+ end
+