If the sum of a the roots of the equation $\left (\displaystyle \frac{1}{2x} -1\right )^{109}=-1$ is $s$,then $[s]$ where $[ ]$ denotes integral part is
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If the sum of a the roots of the equation $\left (\displaystyle \frac{1}{2x} -1\right )^{109}=-1$ is $s$,then $[s]$ where $[ ]$ denotes integral part is