var
x,y,s:real;
begin
writeln('введите x');
readln(x);
writeln('введите y');
readln(y);
s:=ln(abs((y-sqrt(abs(x)))*((x-y)/(x+x*x/4;
writeln(s)
end.
var
x,y,s:real;
begin
writeln('введите x');
readln(x);
writeln('введите y');
readln(y);
s:=ln(abs((y-sqrt(abs(x)))*((x-y)/(x+x*x/4;
writeln(s)
end.