human
What is a Python code to find the minimum number of iterations for the rewrite operation given the following:
CODE FESTIVAL 2016 is going to be held. For the occasion, Mr. Takahashi decided to make a signboard.

He intended to write `CODEFESTIVAL2016` on it, but he mistakenly wrote a different string S. Fortunately, the string he wrote was the correct length.

So Mr. Takahashi decided to perform an operation that replaces a certain character with another in the minimum number of iterations, changing the string to `CODEFESTIVAL2016`.

Find the minimum number of iterations for the rewrite operation.

Constraints

* S is 16 characters long.
* S consists of uppercase and lowercase alphabet letters and numerals.

Input

Inputs are provided from Standard Input in the following form.

S

Output

Output an integer representing the minimum number of iterations needed for the rewrite operation.

Examples

Input

C0DEFESTIVAL2O16

Output

2

Input

FESTIVAL2016CODE

Output

16
impor
assistant
#Here is Python code to find the minimum number of iterations for the rewrite operation.
t java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String get = sc.nextLine();
		sc.close();
		String def = "CODEFESTIVAL2016";

		int wrongCount = 0;
		for(int i=0;i<def.length();i++){
			if(get.charAt(i)!=def.charAt(i)) wrongCount ++;
		}
		System.out.println(wrongCount);

	}

}