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SHARYGIN 2021 Problem 13

    In triangle ABCABC with circumcircle Ω\Omega and incenter II , point MM bisects arc BACBAC and line AI‾\overline{AI} meets Ω\Omega at N≠AN\ne A . The excircle opposite to AA touches BC‾\overline{BC} at point EE . Point Q≠IQ\ne I on the circumcircle of △MIN\triangle MIN is such that QI‾∥BC‾\overline{QI}\parallel\overline{BC} . Prove that the lines AE‾\overline{AE} and QN‾\overline{QN} meet on Ω\Omega .

    Dataset text AI-MO AoPS. Quoted with source.

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