#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;
string s;
fin>>t;
for(int i=1;i<=t;++i)
{
fin>>s;
int r=0;
int k=s.size();
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;
}