diff --git a/answer.txt b/answer.txt
new file mode 100644
index 0000000..6786b68
--- /dev/null
+++ b/answer.txt
@@ -0,0 +1 @@
+Answer is 6837.
diff --git a/solution.py b/solution.py
new file mode 100644
index 0000000..f6033c4
--- /dev/null
+++ b/solution.py
@@ -0,0 +1,17 @@
+number_of_lines=input()
+maincount=0
+while number_of_lines:
+    number=input()
+    count0=0
+    count1=0
+    while number>0:
+        x=number%10
+        if x==0:
+            count0=count0+1
+        else:
+            count1=count1+1
+        number=number/10
+    if count0%3==0 or count1%2==0:
+        maincount=maincount+1
+    number_of_lines=number_of_lines-1
+print maincount