#include<bits/stdc++.h>
using namespace std;
ifstream f("cifra.in");
ofstream g("cifra.out");
int v[20]={1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4};
int main()
{
    int a,x;
    string s;
    f>>a;
    while(a--)
    {  f>>s;
        if(s.size()>=2)
        {
            x=stoi(s.substr(s.length() - 2).c_str());
            g<<(v[x%20-1]+4*(x/20))%10<<" ";
        }
        else
            g<<v[(stoi(s.c_str())-1)%20+(4*(stoi(s.c_str())-1))/20]<<" ";
    }
}