program p238;

uses crt;
var
  i: integer;
  y, x, a, b: real;

begin

  for i := 1 to 9 do
  begin
    write(i, '. x = ');
    readln(x);
    write('   a = ');
    readln(a);
    write('   b = ');
    readln(b);
    if x <  b then
    begin
      y := abs(sqrt(x*x*x) + sin(a + x));
      writeln('   y = ', y);
    end
    else
    begin
      y := sqrt(x) + cos(x );
      writeln('   y = ', y);
    end;
  end;
end.