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BALTIC-WAY 2025 Problem 12

    In an acute triangle ABCABC with AB<ACAB < AC, the incentre is II and the circumcircle is ω\omega. The line AIAI intersects the side BCBC at DD. Let TT be the point on ω\omega such that AT∥BCAT \parallel BC. The line TITI intersects ω\omega again at PP and the circumcircle of triangle APDAPD again at QQ. Prove that AI=DQAI = DQ.

    Official text Baltic Way 2025 official paper, page 2. Quoted with source.

    A model read this text from the scan of the paper by OCR, with vision/local (GLM-OCR-8bit). No person has checked it against the paper yet.

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