#include <bits/stdc++.h>
using namespace std;
ifstream fin("cifra.in");
ofstream fout("cifra.out");


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, 0};

int main()
{
    int t;
   char s[256];
    fin>>t;
    for(int i=1;i<=t;++i)
    {
        fin>>s;
        int r=0;
        int k=strlen(s);
        if(k>=2)
            for(int j=k-2;j<=k-1;j++)
        {
            r=r*10+s[j]-'0';
        }
        else
            r=s[0]-'0';
        fout<<v[r%100]<<endl;

    }
    return 0;
}