#include <bits/stdc++.h>
using namespace std;
ifstream fin("cifra.in");
ofstream fout("cifra.out");
int t, v[105]={0,1,5,2,8,3,9,2,0,9,9,0,6,9,5,0,6,3,7,6,6,7,1,8,4,9,5,8,6,5,5,6,2,5,1,6,2,9,3,2,2,3,7,4,0,5,1,4,2,1,1,2,8,1,7,2,8,5,9,8,8,9,3,0,6,1,7,0,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,4,3,3,4,0,3,9,4,0,7,1,0};
char s[102];
int main()
{
    int i, l, r;
    fin.getline(s,101);
    t=atoi(s);
    for(i=1; i<=t; i++)
    {
        fin.getline(s,101);
        if(strlen(s)==1) fout<<v[s[0]-'0']<<'\n';
        else
        {
            l=strlen(s)-1;
            r=(s[l-1]-'0')*10+(s[l]-'0');
            fout<<v[r]<<'\n';
        }
    }
    return 0;
}