Reverse Cryptarithm

Logic Level 4

ABCDDCBABDAC \large \begin{array}{ccccc} & \color{#D61F06}{A} & \color{#3D99F6}{B} &\color{#ffbf00}{C} &\color{#20A900}{D}\\ - & \color{#20A900}{D} & \color{#ffbf00}{C} & \color{#3D99F6}{B} & \color{#D61F06}{A} \\ \hline & \color{#3D99F6}{B} & \color{#20A900}{D} & \color{#D61F06}{A} & \color{#ffbf00}{C} \end {array}

The above shows a cryptarithm such that each letter represents a distinct digit.

Calculate the 4-digit integer, BDAC\overline{BDAC}.

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