제출 #27756

3
3
1
2

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+
+
-
-

NO

4
3
1
4
2

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+
+
-
+

NO

4
2
4
1
3

+
+
-
+
+
+

NO

2
1
2

런타임 에러 (RTE)
stderr:
 Exception in thread "main" java.lang.NullPointerException: Cannot invoke "java.lang.Integer.intValue()" because the return value of "java.util.ArrayDeque.peekLast()" is null
	at Main.main(Main.java:22)

+
-
+
-

3
2
1
3

런타임 에러 (RTE)
stderr:
 Exception in thread "main" java.lang.NullPointerException: Cannot invoke "java.lang.Integer.intValue()" because the return value of "java.util.ArrayDeque.peekLast()" is null
	at Main.main(Main.java:22)

+
+
-
-
+
-

3
1
2
3

런타임 에러 (RTE)
stderr:
 Exception in thread "main" java.lang.NullPointerException: Cannot invoke "java.lang.Integer.intValue()" because the return value of "java.util.ArrayDeque.peekLast()" is null
	at Main.main(Main.java:22)

+
-
+
-
+
-