const a:array[0..99] of byte=(0,1,5,2,8,3,9,8,2,3,3,4,8,5,1,6,2,1,5,6,6,7,1,8,4,9,5,4,8,9,9,0,4,1,7,2,8,7,1,2,2,3,7,4,0,5,1,0,4,5,5,6,0,7,3,8,4,3,7,8,8,9,3,0,6,1,7,6,0,1,1,2,6,3,9,4,0,9,3,4,4,5,9,6,2,7,3,2,6,7,7,8,2,9,5,0,6,5,9,0);
var f,g:text;
    t,i,n:longint;
    er:integer;
    s:string;
begin
assign(f,'cifra.in');reset(f);
assign(g,'cifra.out');rewrite(g);
read(f,t);
for i:=1 to t do begin
 readln(f,s);
 delete(s,1,length(s)-2);
 val(s,n,er);
 writeln(g,a[n]);
end;
close(f);
close(g);
end.