import java.io.; import java.util.; import java.util.regex.*; public class Solution {

public static void main(String[] args) {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
    Scanner sc = new Scanner(System.in);
    int n = Integer.parseInt(sc.nextLine());
    String[] fhr = new String[n];
    for(int i=0;i<n;i++){
        fhr[i] = sc.nextLine();
    }

    Pattern pattern = Pattern.compile("hackerrank");
    for(int i=0;i<n;i++){
        Matcher matcher = pattern.matcher(fhr[i]);
        if(matcher.find()){
            if(matcher.start()==0 && matcher.end()== fhr[i].length()) System.out.println("0");
            else if(matcher.end()== fhr[i].length())   System.out.println("2");
            else if(matcher.start()== 0)   System.out.println("1");
            else System.out.println("-1");
        }else System.out.println("-1");
    }
}

}