제출 #89146

4
2
1 3
2 1

3

2

7
2
6 1
1 3

3

2

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

5

4

2
0

런타임 에러 (RTE)
stderr:
 Traceback (most recent call last):
  File "Main.py", line 28, in <module>
    print(len(bfs(graph)))
  File "Main.py", line 24, in bfs
    temp = list(set(graph[node]) - set(answer))
KeyError: 1

0