a = 0.1; b = 0.2; c = 1 - a - b;
A = ((a+b)*(b+c)*(c+a))^(1/3)
B = (a*b*c)^(1/3)
C = (sqrt((a+b)/c) + sqrt((b+c)/a) + sqrt((c+a)/b))^2
16/(3*A^3)
