#include <fstream>
#include <cstring>

using namespace std;

int z[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()
{
    ifstream fin("cifra.in");
    ofstream fout("cifra.out");

    char sir[101]; int l,cifra,t;

    fin>>t; fin.get();

    while(t--)
    {
        fin.getline(sir, 101);

        l=strlen(sir);

        if(l==1) cifra=sir[0]-'0';
        else cifra=(sir[l-2]-'0')*10+(sir[l-1]-'0');

        fout<<z[cifra]<<endl;
    }
}