PROGRAMMING:ABC of small Taotao series
Young Taotao has been smart and easy to learn since he was a child. When he was five years old, he could memorize word lists. Now, the teacher of little Taotao has sent him an English essay for him to translate. It's so easy,
The playful little Taotao decided to count the number of different letters in the passage. Can you do it?
###Input format:
Enter a string s (1 < = strlen (s) < = 100)
###Output format:
Output the number of all existing words.
###Input example:
Here is a set of inputs. For example:
```in
I am Acmer.
```
###Output example:
The corresponding output is given here. For example:
```out
a:1
c:1
e:1
m:2
r:1
A:1
I:1
```
answer：If there is no answer, please comment
The playful little Taotao decided to count the number of different letters in the passage. Can you do it?
###Input format:
Enter a string s (1 < = strlen (s) < = 100)
###Output format:
Output the number of all existing words.
###Input example:
Here is a set of inputs. For example:
```in
I am Acmer.
```
###Output example:
The corresponding output is given here. For example:
```out
a:1
c:1
e:1
m:2
r:1
A:1
I:1
```
answer：If there is no answer, please comment