dijkstra: fix invalid stats

dijsktra.py

@@ -52,17 +52,13 @@ class Dijkstra():
         # start at destination
         sequence.append(dest)
 
-        total_time = 0
-        total_co2 = 0
-
+        # go through all possibilities until we're back at start
         while start not in sequence:
             current = self.table[sequence[-1]]  # last element of list
             prev = current["prev"]
-            total_time += current["distance"][0]
-            total_co2 += current["distance"][1]
             sequence.append(prev)
 
         sequence.reverse()
         print(sequence)
-        print("Total Time:", total_time)
-        print("Total CO2:", total_co2)
+        print("Total Time:", self.table[dest]["distance"][0])
+        print("Total CO2:", self.table[dest]["distance"][1])