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#17084. 克罗地亚字母

统计

不久前,在操作系统还没有今天这样强大之前,计算机(其外部通常有加速按钮)无法处理克罗地亚语字母表中的某些字母。程序员们同意使用两到三个字母的替代组合,如下表所示:

字母 字符
č c=
ć c-
dz=
đ d-
lj lj
nj nj
š s=
ž z=

例如,单词 ljes=njak 由克罗地亚语字母表中的六个字母组成:lješnjak

编写一个程序,计算给定单词中字母的数量。

输入格式

第一行包含一个长度最多为 100 的字符串。字符串中只会出现英文小写字母以及字符 -=

该字符串表示一个按上述方式编码的单词。

输出格式

输出输入单词中字母的数量。

样例

输入样例 1

dz=ak

输出样例 1

3

输入样例 2

ljes=njak

输出样例 2

6

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