PROGRAMMING:Number of digits

Xiao Ming's cousin just learned how to count. He gave him a string of numbers to count. He always counted wrong.
Now I want you to program to help my little cousin calculate the number of digits of a given non negative integer.
###Input format:
Enter a non negative integer m in one line, 0 < = m < = 900000000.
###Output format:
Output the number of non negative integer m in one line.
###Input example:
```in
ten
```
###Output example:
```out
two
```






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