제출 #86223

4 5 1
1 2
1 3
1 4
2 4
3 4

[1, 2, 4, 3]
[1, 2, 3, 4]

1 2 4 3 
1 2 3 4 

4 5 4
1 2
2 1
4 2
3 4
1 2

[4, 2, 1, 3]
[4, 2, 3, 1]

4 2 1 3 
4 2 3 1 

6 6 2
5 4
2 3
5 3
5 1
5 3
5 2

[2, 3, 5, 1, 4]
[2, 3, 5, 1, 4]

2 3 5 1 4 
2 3 5 1 4 

7 6 2
7 5
4 3
5 7
6 3
1 5
5 6

런타임 에러 (RTE)
stderr:
 Traceback (most recent call last):
  File "Main.py", line 52, in <module>
    ans1 = dfs(v, graph, set(), step1)
  File "Main.py", line 22, in dfs
    for i in g[start_node]:
KeyError: 2

2 
2