#include <fstream>
#include <string>
#include <iostream>
#include <cstdlib>
#include <unistd.h>
using namespace std;

int v[]={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;
  string x;  
    int i,k,a;

  ifstream cin("cifra.in");
  ofstream cout("cifra.out");
 
    cin >> t;
     for(i=0;i<t;i++)
     {
      cin >> x; 
      k = x.size();
      a = atoi((k>2?x.substr(k-2):x).c_str());
      cout  << v[a] << endl;   
  }
  cin.close();
  cout.close();
 
  return 0;
}