W233

import java.util.*; public class W233 {public static void main (String[] args) {while (JPL.test()) {

////////////////////////////// PROBLEM STATEMENT //////////////////////////////
// Given a string, count the number of words ending in 'y' or 'z' -- so the  //
// 'y' in "heavy" and the 'z' in "fez" count, but not the 'y' in "yellow"    //
// (not case sensitive). We'll say that a y or z is at the end of a word if  //
// there is not an alphabetic letter immediately following it. (Note:        //
// Character.isLetter(char) tests if a char is an alphabetic letter.)        //
//   "fez day" -> 2                                                          //
//   "day fez" -> 2                                                          //
//   "day fyyyz" -> 2                                                        //
///////////////////////////////////////////////////////////////////////////////

  // >>>>>> Your Java Code Fragment starts here <<<<<<

  Scanner kb=new Scanner(System.in);

  String theInput=kb.nextLine().toLowerCase();
  int strLength=theInput.length();
  int count=0;

  for (int i=1;i<strLength;i++) {
    if (theInput.charAt(i)==' ' || theInput.charAt(i)=='-' || theInput.charAt(i)==':' || theInput.charAt(i)=='!' || theInput.charAt(i)=='2') {
      if ((theInput.charAt(i-1)=='y') || (theInput.charAt(i-1)=='z')) {
        count++;
      }
    }
  }

  if ((theInput.endsWith("y")) || (theInput.endsWith("z"))) {
    count++;
  }

  System.out.print(count);

  // >>>>>> Your Java Code Fragment ends here <<<<<<
}}}