+=

03/c.py

@@ -14,7 +14,7 @@ for data in rucksacks:
     left = data[:len(data)//2]
     right = data[len(data)//2:]
     common = ''.join(set(left) & set(right))
-    tot = tot + priorities.rfind(common)+1
+    tot += priorities.rfind(common)+1
 
 print("First answer: " + str(tot))
 
@@ -24,6 +24,6 @@ step = 3
 for i in range(start, end, step):
     three = rucksacks[i:i+step]
     common = ''.join(set(three[0]) & set(three[1]) & set(three[2]))
-    tot2 = tot2 + priorities.rfind(common)+1
+    tot2 += priorities.rfind(common)+1
 
 print("Second answer: " + str(tot2))