#include <fstream>

using namespace std;
ifstream fin( "cifra.in" );
ofstream fout( "cifra.out" );
int ultCif[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 };
int main(){
  int n, i, nr, nrcif;
  string a;
  fin >> n;
  for ( i = 0; i < n; i++ ){
    fin >> a;
    nrcif = a.size();
    if ( nrcif >= 2 )
      nr = ( a[nrcif - 1] - '0' ) + 10 * ( a[nrcif - 2] - '0' );
    else
      nr = a[0] - '0';
    fout << ultCif[nr] << "\n";
  }
  return 0;
}