Record Case Detail - VE477 FA2021 (Manuel) - JOJ

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

Traceback (most recent call last):
  File "EdmondsKarp.py", line 59, in <module>
    graph.add_edge(start, end, capacity)
  File "/out/package/graph.py", line 88, in add_edge
    raise ValueError("edge already exists in graph, please use set_edge_weight")
ValueError: edge already exists in graph, please use set_edge_weight

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.