제출 #71739

3 1 1
2 3

런타임 에러 (RTE)
stderr:
 Exception in thread "main" java.lang.StringIndexOutOfBoundsException: index -1, length 0
	at java.base/java.lang.String.checkIndex(String.java:4565)
	at java.base/java.lang.AbstractStringBuilder.deleteCharAt(AbstractStringBuilder.java:970)
	at java.base/java.lang.StringBuilder.deleteCharAt(StringBuilder.java:298)
	at Main.main(Main.java:43)

1 
1 

3 2 1
2 1
1 3

런타임 에러 (RTE)
stderr:
 Exception in thread "main" java.lang.StringIndexOutOfBoundsException: index -1, length 0
	at java.base/java.lang.String.checkIndex(String.java:4565)
	at java.base/java.lang.AbstractStringBuilder.deleteCharAt(AbstractStringBuilder.java:970)
	at java.base/java.lang.StringBuilder.deleteCharAt(StringBuilder.java:298)
	at Main.main(Main.java:43)

1 2 3 
1 2 3 

5 4 1
4 3
1 4
4 2
4 5

런타임 에러 (RTE)
stderr:
 Exception in thread "main" java.lang.StringIndexOutOfBoundsException: index -1, length 0
	at java.base/java.lang.String.checkIndex(String.java:4565)
	at java.base/java.lang.AbstractStringBuilder.deleteCharAt(AbstractStringBuilder.java:970)
	at java.base/java.lang.StringBuilder.deleteCharAt(StringBuilder.java:298)
	at Main.main(Main.java:43)

1 4 2 3 5 
1 4 2 3 5