// la bascalie
#include <fstream>
#include <cstring>
#define nmax 200

using namespace std;

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

int suma, n, x, rez = 1;
long lung;
char ch[nmax];
short v[]={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};

/*
void ridic(int i, int j)
{
    int p;
    rez = 1;
    for(p=0; (1<<p) <= i; ++p)
    {
        if((1<<p) & j)
            rez = rez * i % 10;
        i = i*i % 10;
    }
    // return rez;
}
*/

int main()
{
    int i;
    fin >> n;
    for(i=1; i<=n; ++i)
    {
        fin >> ch;
        lung = strlen(ch);
        suma = ch[lung-1] - '0';
        if(lung > 1)
            suma += (ch[lung-2]-'0') * 10;
        fout << v[suma-1] << "\n";
    }
    // fout << suma << "\n";
    return 0;
}