제출 #43207

3 1 2
3 1

런타임 에러 (RTE)
stderr:
 Traceback (most recent call last):
  File "Main.py", line 64, in <module>
    graph.start_DFS()
  File "Main.py", line 58, in start_DFS
    self.DFS(self.V)
  File "Main.py", line 54, in DFS
    for vertex in self.nodelist[v]:
TypeError: 'NoneType' object is not iterable

2 
2 

3 1 3
1 2

런타임 에러 (RTE)
stderr:
 Traceback (most recent call last):
  File "Main.py", line 64, in <module>
    graph.start_DFS()
  File "Main.py", line 58, in start_DFS
    self.DFS(self.V)
  File "Main.py", line 54, in DFS
    for vertex in self.nodelist[v]:
TypeError: 'NoneType' object is not iterable

3 
3 

4 3 4
1 2
2 1
2 3

런타임 에러 (RTE)
stderr:
 Traceback (most recent call last):
  File "Main.py", line 64, in <module>
    graph.start_DFS()
  File "Main.py", line 58, in start_DFS
    self.DFS(self.V)
  File "Main.py", line 54, in DFS
    for vertex in self.nodelist[v]:
TypeError: 'NoneType' object is not iterable

4 
4