public class Main {

    public static void main(String[] args) {

        RrdDef rrdDef;

        RrdDb rrdDb;

        String str = "divabcdivbbdivcdivdde",

               des = "div";

        int cnt = 0;

        int offset = 0;

        while((offset = str.indexOf(des, offset)) != -1){

            offset = offset + des.length();

            cnt++;

        }

        System.out.println(cnt);

    }

}