var f,g:text;
    b:string[100];
    t,a,i,lungime,c,c2:longint;
    v:array[1..100] 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);
begin
assign(f,'cifra.in');reset(f);
assign(g,'cifra.out');rewrite(g);
readln(f,t);
for i:=1 to t do
    begin
    readln(f,b);
    c2:=0;
    lungime:=lenght(b);
    c:=ord(b[lungime]-ord('0');
    if lungime=>2 then c2:=ord(b[lungime-1]-ord('0');
    writeln(f,v[(c2*10+c)mod 100]);
    end;
close(f);
close(g);
end.