message: Update paths-in-maze-that-lead-to-same-room.py
diff: @@ -11,4 +11,4 @@ class Solution(object):
  adj = [set() for _ in xrange(n)]
  for u, v in corridors:
  adj[min(u, v)-1].add(max(u, v)-1)
  - return sum(sum((k in adj[i]) for j in adj[i] for k in adj[j]) for i in xrange(n))
  + return sum(k in adj[i] for i in xrange(n) for j in adj[i] for k in adj[j])
  