var s:string;   
    x:byte;   
    n,t,i,nr,sl:longint;   
begin  
assign(input,'cifra.in');   
reset(input);   
assign(output,'cifra.out');   
rewrite(output);   
readln(input,t);   
for i:=1 to t do begin  
    readln(input,s);   
    n:=length(s);   
    if n=1 then sl:=ord(s[1])-48  
       else begin  
            sl:=ord(s[n-1])-48;   
            sl:=10*sl+ord(s[n])-48;   
            end;   
    nr:=4*(sl div 20);   
    sl:=sl mod 20;   
    if sl>=1then inc(nr);   
    if sl>=2then nr:=nr+4;   
    if sl>=3then nr:=nr+7;   
    if sl>=4then nr:=nr+6;   
    if sl>=5then nr:=nr+5;   
    if sl>=6then nr:=nr+6;   
    if sl>=7then nr:=nr+3;   
    if sl>=8then nr:=nr+6;   
    if sl>=9then nr:=nr+9;   
    if sl>=11then inc(nr);   
    if sl>=12then nr:=nr+6;   
    if sl>=13then nr:=nr+3;   
    if sl>=14then nr:=nr+6;   
    if sl>=15then nr:=nr+5;   
    if sl>=16then nr:=nr+6;   
    if sl>=17then nr:=nr+7;   
    if sl>=18then nr:=nr+4;   
    if sl>=19then nr:=nr+9;   
    writeln(output,nr mod 10);   
    end;   
close(input);   
close(output);   
end.