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ILL 1983 Problem 37

    The points A1,A2,…,A1983A_1,A_2, \ldots , A_{1983} are set on the circumference of a circle and each is given one of the values ±1\pm 1 . Show that if the number of points with the value +1+1 is greater than 17891789 , then at least 12071207 of the points will have the property that the partial sums that can be formed by taking the numbers from them to any other point, in either direction, are strictly positive.

    Dataset text AI-MO AoPS. Quoted with source.

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