Cookie Monster like cookie. Cookie Monster want cookie. Cookie Monster have String ~S~ of all lowercase letters. Tell Cookie Monster how many characters in ~S~ are one of the letters in "cookie".

Constraints

~|S|\le 5000~

Input Specification

The first and only line contains the string ~S~.

Output Specification

One line with one integer, the number of characters in ~S~ that are one of the letters in "cookie".

Sample Input

cracker

Sample Output

4

Sample Explanation

The first (c), fourth (c), fifth (k), and sixth (e) letters are contained in "cookie". So, there are ~4~ characters in ~S~ that are one of the letters in "cookie".