Size plus power of a test on a Bernoulli sample

Let $X_1,X_2,X_3,X_4$ be a random sample from a discrete distribution with the probability mass function $P(X=0)=1-P(X=1)=1-p$, for $0<p<1$. To test the hypothesis

$$H_0:p=\frac34\quad\text{against}\quad H_1:p=\frac45,$$

consider the test: Reject $H_0$ if $X_1+X_2+X_3+X_4>3$. Let the size and power of the test be denoted by $\alpha$ and $\gamma$, respectively. Then $\alpha+\gamma$ (round off to 2 decimal places) equals __________