제출 #88568

16
3
13 14
1 9
2 1
6
3 D
6 D
7 L
10 D
12 D
16 D

20

32

20
5
16 20
18 20
1 8
3 20
1 4
8
2 D
7 L
10 D
13 L
15 D
19 L
20 D
21 L

27

33

5
3
4 4
1 2
4 1
12
4 D
7 D
11 D
13 L
14 L
17 D
19 L
21 L
22 L
26 L
30 D
31 D

15

14

19
0
3
3 L
8 D
9 D

런타임 에러 (RTE)
stderr:
 Exception in thread "main" java.lang.NullPointerException: Cannot invoke "String.length()" because "str" is null
	at java.base/java.util.StringTokenizer.<init>(StringTokenizer.java:197)
	at java.base/java.util.StringTokenizer.<init>(StringTokenizer.java:234)
	at Main.bfs(Main.java:55)
	at Main.main(Main.java:45)

4

16
3
1 11
4 16
5 16
2
4 D
9 L

런타임 에러 (RTE)
stderr:
 Exception in thread "main" java.lang.NullPointerException: Cannot invoke "String.length()" because "str" is null
	at java.base/java.util.StringTokenizer.<init>(StringTokenizer.java:197)
	at java.base/java.util.StringTokenizer.<init>(StringTokenizer.java:234)
	at Main.bfs(Main.java:85)
	at Main.main(Main.java:45)

21

5
0
11
4 L
8 L
10 D
14 D
17 L
21 D
24 L
28 L
29 D
31 D
34 D

런타임 에러 (RTE)
stderr:
 Exception in thread "main" java.lang.NullPointerException: Cannot invoke "String.length()" because "str" is null
	at java.base/java.util.StringTokenizer.<init>(StringTokenizer.java:197)
	at java.base/java.util.StringTokenizer.<init>(StringTokenizer.java:234)
	at Main.bfs(Main.java:55)
	at Main.main(Main.java:45)

5