22202956

ex 4.9 q 4 had to be made into backtracking

4_9_Exercises/Question 4.py

@@ -18,7 +18,7 @@ def np(x, y):
             for pos in new_pos:
                 if (pos not in current) and ((0 <= pos[0] <= x) and (0 <= pos[1] <= y)):
                     trace.append(current + [pos])
-    return final
+    return len(final)
 
 
 def np2(x, y, trace=None):