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-rw-r--r--prolog/problems/family_relations/ancestor_2/common.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/prolog/problems/family_relations/ancestor_2/common.py b/prolog/problems/family_relations/ancestor_2/common.py
index 873b87b..3226f34 100644
--- a/prolog/problems/family_relations/ancestor_2/common.py
+++ b/prolog/problems/family_relations/ancestor_2/common.py
@@ -1,5 +1,12 @@
# coding=utf-8
+from operator import itemgetter
+import socket
+import prolog.engine
+import prolog.util
+from server.hints import Hint, HintSequence
+import server.problems
+
id = 100
group = 'family_relations'
number = 7