uses crt;
var a,t,z:real;beginwriteln('write a ');readln(a);writeln('write t');readln(t);z:=sqr(a)+(4*a*sqr(t)/(2+a));writeln(z);readln;end.
uses crt;
var a,t,z:real;
begin
writeln('write a ');
readln(a);
writeln('write t');
readln(t);
z:=sqr(a)+(4*a*sqr(t)/(2+a));
writeln(z);
readln;
end.