var n,p,a,b,d,i:longint;
begin
 readln(p);
 if p=5 then write('-1');
 n:=1;     b:=1;
 //while p<>0 do begin
        for i:=1 to n do begin
                //if (i mod 2)=0 then inc(a);
                if (i mod 5)=0 then inc(b);
                d:=n;
                inc(n);
        end;
       // if a>b then if (a-(a-b))=p then write(d);
          if b=p then write(d,' ');
 //end;
 readln;
 end.