--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/day1/exercise/even_perfect_4.py	Thu Oct 08 18:59:47 2009 +0530
@@ -0,0 +1,17 @@
+def is_perfect_square(n):
+    i = 1
+    while i * i < n:
+        i += 1
+    return i * i == n
+
+def all_digits_even(n):
+    if n < 0: n = -n
+    while n > 0:
+        if n % 2 == 1:
+            return False
+        n /= 10
+    return True
+
+for i in range(2222, 8888):
+    if all_digits_even(i) and is_perfect_square(i):
+        print i