#include <iostream>
#include <fstream>
#include <string>
#include <cmath>
using namespace std;

int main()
{
    ifstream f("cifra.in");
    ofstream g("cifra.out");

    int t;
    f>>t;
    //cout<<t<<endl;

    string s;
    getline(f, s);
    int  m, ered;

    //tomb generalasa
    int v[100]={0, 1, 5, 2, 8, 3, 9, 2, 8, 7, 7,
     8, 4, 7, 3, 8, 4, 1, 5, 4, 4,
     5, 9, 6, 2, 7, 3, 6, 2, 1, 1,
     2, 8, 1, 7, 2, 8, 5, 9, 8, 8,
     9, 3, 0, 6, 1, 7, 0, 6, 5, 5,
     6, 2, 5, 1, 6, 2, 9, 3, 2, 2,
     3, 7, 4, 0, 5, 1, 4, 0, 9, 9,
     0, 6, 9, 5, 0, 6, 3, 7, 6, 6,
     7, 1, 8, 4, 9, 5, 8, 4, 3, 3,
     4, 0, 3, 9, 4, 0, 7, 1, 0};


    for(int i=1; i<=t; i++)
    {
        f>>s;

        if(s.length()>=2){
            m=(s[s.length()-2]-48)*10+(s[s.length()-1]-48);
        }
        else m=s[0]-48;

        g<<v[m]<<endl;
    }


    return 0;
}