diff --git a/shared.py b/shared.py
--- a/shared.py
+++ b/shared.py
@@ -1,7 +1,7 @@
 import re
 import itertools
 
-TOP_NGRAM_COUNT = 5000
+TOP_NGRAM_COUNT = 3000
 
 
 def preprocess(text):
@@ -69,9 +69,12 @@ class Sample:
 		use frequencies x order
 		use letter, digrams, trigrams
 		use absolute x square"""
-		"""make a set difference of keys, multiply its size by the max score"""
-		res = sum(abs(v-other.ranked_ngrams.get(k, len(other.ranked_ngrams))) for (k, v) in self.ranked_ngrams.items()) + \
-					sum(abs(v-self.ranked_ngrams.get(k, len(self.ranked_ngrams))) for (k, v) in other.ranked_ngrams.items())
+		m = len(other.ranked_ngrams)
+
+		res = sum(
+			(abs(v - other.ranked_ngrams[k]) if k in other.ranked_ngrams else m)
+			for (k, v) in self.ranked_ngrams.items()
+		)
 
 		return res
 
@@ -79,4 +82,4 @@ class Sample:
 def identify(text, models):
 	sample = Sample.extract(text)
 
-	return sorted(models, key=lambda m: m.compare(sample))[0].language
+	return sorted(models, key=lambda m: sample.compare(m))[0].language