#include <bits/stdc++.h>
using namespace std;
int v[101]={0,1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,2,1,1,2,8,1,7,2,8,5,9,8,8,9,3,0,6,1,7,0,6,5,5,6,2,5,1,6,2,9,3,2,2,3,7,4,0,5,1,4,0,9,9,0,6,9,5,0,6,3,7,6,6,7,1,8,4,9,5,8,4,3,3,4,0,3,9,4,0,7,1,0,0};
int main()
{
    ifstream fin ("cifra.in");
    ofstream fout ("cifra.out");
    int t;
    string x;
    fin>>t;
    for(int i=0;i<t;i++)
    {
            fin>>x;
            int y;
            if(x.length()>1)
            {
              y=stoi(x.substr(x.length()-2).c_str());
            }
            else
            {
                y=stoi(x.c_str());
            }
            fout<<v[y]<<endl;

    }

    fin.close();
    fout.close();
    return 0;
}