#include <iostream>
#include <fstream>
//#include <sstream>
using namespace std;
/**/
int main()
{
int n,ns;
short nc,pc,uc;
char sirc[2];
char sir[200];
short rez[101],rez1[100] = {
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};
//stringstream sirc (stringstream::in | stringstream::out);
//string sir;
ifstream f1 ("cifra.in");
ofstream f2 ("cifra.out");
for (short i=1;i<=100;++i)
rez[i]=rez1[i-1];
if (f1.is_open())
{
while (! f1.eof())
{
f1>>n;
for (int i=0; i<n; ++i)
{
f1>>sir;
ns = strlen(sir);
if (ns >=2)
{
sirc[0] = sir[ns-2];
sirc[1] = sir[ns-1];
nc = atoi(sirc);
uc=nc%10;
nc=nc/10;
pc=(nc%10)*10;
nc=pc+uc;
}
else
{
nc = atoi(sir);
}
//sir.clear();
if (atoi(sir)>=100) f2<<rez1[nc]<<"\n"; else
f2<<rez[nc]<<"\n";
//f2.flush();
//sir.clear();
}
}
}
//cin.ignore();
//cin.get();
f1.close();
f2.close();
return 0;
}