PROGRAMMING:Count and output the number of small vowels in the string

Input a string ending with a newline, count and output the number of small vowels in the string (small vowels: 'a', 'e', 'I', 'o', 'U').
###Input format:
Enter a string on one line
###Output format:
The number of small vowels in the output string on one line
###Input example:
Here is a set of inputs. For example:
```in
HelloI
```
###Output example:
The corresponding output is given here. For example:
```out
two
```







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