program raf105;

var x,y: real;

begin

write('x = ');

readln(x);  

if x <= 0

 then y:= power(x,2) - 0.3;

if (0 < x) and (x <= 1)

 then y:= 0;

if x > 1

 then y:= power(x,2) - x;

writeln('y = ',y);

end.

PascalABC 3.4.2