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HMIC 2023 Problem 3

    Triangle ABCA B C has incircle ω\omega and AA-excircle ωA\omega_{A}. Circle γB\gamma_{B} passes through BB and is externally tangent to ω\omega and ωA\omega_{A}. Circle γC\gamma_{C} passes through CC and is externally tangent to ω\omega and ωA\omega_{A}. If γB\gamma_{B} intersects line BCB C again at DD, and γC\gamma_{C} intersects line BCB C again at EE, prove that BD=ECB D=E C.

    Dataset text NuminaMath olympiads. Quoted with source.

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