var
  n: integer;
  x, y: real;

begin
  readln(n, x, y);
  case n of
    1: writeln('sin(', x, ') = ', sin(x), #13, 'sin(', y, ') = ', sin(y));
    2: writeln('cos(', x, ') = ', cos(x), #13, 'cos(', y, ') = ', cos(y));
    3: writeln('tg(', x, ') = ', tan(x), #13, 'tg(', y, ') = ', tan(y));
    4: writeln('ctg(', x, ') = ', 1 / tan(x), #13, 'ctg(', y, ') = ', 1 / tan(y));
    else
      writeln('Null');
  end;
end.