program tt;
var i : longint;
    j : real;
begin
for i := -10 to 10 do
  begin
  j := 2 * i;
  j := 0.2 * i;
  j := .2 * i;
// if i = 0 then i := 1;
// j := 0 / i;
  writeln(i, ' ' , j);
  end;
end.