const
m:array[0..99]of integer=
(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);
var
s:ansistring;
i,mm,n:longint;
f1,f2:text;
begin
assign(f1,'cifra.in');
reset(f1);
assign(f2,'cifra.out');
rewrite(f2);
readln(f1,mm);
while mm<>0 do
begin
readln(f1,s);
n:=ord(s[length(s)])-48;
if length(s)>1 then
n:=n+(ord(s[length(s)-1])-48)*10;
writeln(f2,m[n]);
mm:=mm-1;
end;
close(f1);
close(f2);
end.