<image>Given the net of a cube as shown in the figure, if the six faces of the cube are denoted by the letters $$A$$, $$B$$, $$C$$, $$D$$, $$E$$, and $$F$$, and the numbers on the faces are opposites to the numbers on their respective opposing faces, with the conditions $$B=1$$, $$C=-a^{2}-2a+1$$, $$D=-1$$, $$E=3a+4$$, and $$F=2-a$$, find the value represented on face $$A$$. __