Var x,y:real;
begin
write("Введите x:");
readln(x);
write("Введите y:");
readln(y);
if (((x>0) and (x<=1) and (y>0) and (y<=1)) or ((x>=-1) and (x<0) and (y>=-1) and (y<0)) or ((x=0) and (y=0))) then writeln("Входит") else writeln("Не входит");<br>end.