제출 #97798

2
9 1
1 2
3 3
3 2
3 1
2 1

Yes
No

YES
NO

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

Yes
No

YES
NO

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

Yes
No

YES
YES

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

런타임 에러 (RTE)
stderr:
 Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 4 out of bounds for length 3
	at Main.dfs(Main.java:69)
	at Main.main(Main.java:47)

YES
YES
YES

2
8 13
2 3
5 3
5 6
4 8
6 4
4 1
2 6
5 1
4 3
2 1
7 3
7 1
2 8
8 4
6 2
4 6
1 6
6 3

런타임 에러 (RTE)
stderr:
 Exception in thread "main" java.lang.IndexOutOfBoundsException: Index 9 out of bounds for length 9
	at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64)
	at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70)
	at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:266)
	at java.base/java.util.Objects.checkIndex(Objects.java:361)
	at java.base/java.util.ArrayList.get(ArrayList.java:427)
	at Main.dfs(Main.java:82)
	at Main.main((...truncated, total 525 characters)

YES
YES