#include <bits/stdc++.h>
 
using namespace std;
  
int main()
{
ifstream fin("cifra.in");
ofstream fout("cifra.out");
 
int n,l,k;

int v[100] = {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};
char s[105];
 
    fin >> n;
    for (l=1;l<=n;l++){
    fin >> s;
    if (strlen(s)!=1) k=((s[strlen(s)-2]-'0')*10+s[strlen(s)-1]-'0');
                else k=s[strlen(s)-1]-'0';
   fout << v[k - 1] << "\n";
    }
    
}