I got AC, but while looking at your solutions, i have guessed following:

Nobody paid attention, that here may be more, than 3 potions: Total number of types of any potion is equal to 15:

B, R, Y;

B + R = V (Violet)
B + Y = G (Green)
R + Y = O (Orange)

Proceed:

B + V = BV;
R + V = RV;
Y + V = YV;

and etc: BO, RO, YO, BG, RG, YG - "expert" potions; Sandro can combine any type of potions and any number less or equal than 15;

Folowing to the state of this problem, we should consider any recipes of interesting final potion, and these recipes could include any of K <= 15 reagents - other potions; We also should recognize, what type of advanced potions Sandro can prepare, using his start reagents; And add new occasions into the answer.

Sry for English, but i think - w/o considering the above, actual solution isn't correct.

Edited by author 22.08.2011 01:36

Edited by author 22.08.2011 01:36

WTF?

In the recipe thtre could be only “Blue”, “Red”, or “Yellow”. No Blue-Violet or Yellow-Orange. So if u even make some "expert" poisons, you're not able to do needed poison.

Just use initial poisons.