#include <fstream>
#include <string>

using namespace std;

ifstream fin("cifra.in");
ofstream fout("cifra.out");

int pre[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, };

int main() {
    int t;
    fin>>t;
    string s;
    for ( int i= 0; i<t; ++i ) {
        fin>>s;

        int x= (int)s[s.size()-1]-'0';
        if ( (int)s.size()>=2 ) {
            x= x+((int)s[s.size()-2]-'0')*10;
        }
        fout<<pre[x]<<"\n";
    }

    return 0;
}