//#include <iostream>
#include<fstream>
#include<math.h>
#include<cstring>
#include<cstdlib>
using namespace std;
ifstream fin("cifra.in");
ofstream fout("cifra.out");
char nr[400],x[4];
int n,a,numero[]={0,1,5,2,8,3,9,2,8,7,7,8,2,9,5,0,6,9,5,4,4,5,9,6,2,7,3,6,2,1,1,2,6,3,9,4,0,3,9,8,8,9,3,0,6,1,7,0,6,5,5,6,0,7,3,8,4,7,3,2,2,3,7,4,0,5,1,4,0,9,9,0,4,1,7,2,8,1,7,6,6,7,1,8,4,9,5,8,4,3,3,4,8,5,1,6,2,5,1,0};
int main()
{
    fin>>n;
    for (int i=1;i<=n;i++)
    {
        fin.get();
        fin>>nr;
        if(strlen(nr)>1)
        {x[0]=nr[strlen(nr)-2];
        x[1]=nr[strlen(nr)-1];
        x[2]='\0';}
        else x[0]=nr[0];
        a=atoi(x);
        fout<<numero[a]<<endl;
    }
    return 0;
}