\[P\left( \frac{1}{2} \right) = a \bullet \left( \frac{1}{2} \right)^{4} + b \bullet \left( \frac{1}{2} \right)^{3} + c =\]
\[= \frac{1}{16}a + \frac{1}{8}b + c\]
\[\frac{1}{16}a + \frac{1}{8}b + c = 1\ \ \ \ \ | \bullet 16\]
\[a + 2b + 16c = 16.\]
\[Ответ:16.\]