program p3;
 
function g(a,b:real):real;
begin
g:=(sqr(a)+sqr(b))/(sqr(a)+(2*a*b)+(3*sqr(b))+4);
end;
 
var s,t:real;
begin
write('S= '); readln(s);
write('T= '); readln(t);
 
writeln('Otvet= ',g(1.2,s)+g(t,s)-g(2*s,s*t):0:3);
readln;
end.