diff --git a/oop.py b/oop.py
index ddb29c2..b089770 100644
--- a/oop.py
+++ b/oop.py
@@ -2,7 +2,6 @@ import copy
 import heapq
 import re
 from math import isinf,inf
-
 import matplotlib.patches
 import networkx as nx
 import matplotlib.pyplot as plt