Background

Special for beginners, ^_^

Description

Format

Input

Output

一个数，即生成字符串的好听程度

Samples

Insert 0 f
Insert 1 j
Insert 2 x
Insert 3 m
Insert 4 l
Insert 5 h
Insert 6 x
Insert 7 w
Insert 8 j
Insert 9 z
Insert 10 b
Insert 11 m
Insert 12 r
Insert 11 z
Insert 12 b
Modify 10 11 m
Remove 10
Insert 7 t
Insert 8 o
Insert 9 o
Insert 10 r
Reverse 8 11
Rotate 1 11 4

7

Limitation

1s, 1024KiB for each test case.