Record Case Detail - VE477 FA2020 (Manuel) - JOJ

This function is in beta test. Please help improve it in the issues here.

Traceback (most recent call last):
  File "BellmanFord.py", line 48, in <module>
    result = BellmanFord(G, V, s, t)
  File "BellmanFord.py", line 25, in BellmanFord
    current = parent[current]
KeyError: None

Your answer may be identical to the JOJ answer in the first several lines.

However, the main problem you meet now is Runtime Error. And the exit code of your program is 1, which should be 0.

Please double check your code to solve this problem and try again.

176
None

['39', '180', '50', '108', '168', '176']