#include<iostream>
#include<string>
#include<cstdlib>
#include<algorithm>
using namespace std;
string s1="hackerrank";
int main()
{
    int N,i=0;
    cin>>N;
    do
    {
        string s;
        getline(cin,s);
        unsigned int k=s.find(s1);
        unsigned int k1=s.rfind(s1);
        if(k==0 && k1==(s.length()-10))
            cout<<"0"<<endl;
        else if(k==0)
            cout<<"1"<<endl;
        else if(k1==(s.length()-10))
            cout<<"2"<<endl;
        else
            cout<<"-1"<<endl;
        i++;
    }while(i<=N);
    return 0;
}
 

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6
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2
3 2
3]]
4 3
2 6
6 3
3
3
2
6
2