#include <bits/stdc++.h>

using namespace std;

int main()
{
    ifstream f("cifra.in");
    ofstream g("cifra.out");
    ios::sync_with_stdio(false);

    int idx, l, t, cifra[]={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};
    char s[111];
    f >> t;
    while(t--){
        f >> s;
        l=strlen(s);
        if (l==1) idx=s[l-1]-'0';
        else idx=(s[l-2]-'0')*10+s[l-1]-'0';
        g << cifra[idx] << "\n";
    }
}