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CONO-SUR 2010 Problem 2

    On a line, 4444 points are marked and numbered 1,2,3,…,441, 2, 3,…,44 from left to right. Various crickets jump around the line. Each starts at point 11 , jumping on the marked points and ending up at point 4444 . In addition, each cricket jumps from a marked point to another marked point with a greater number. When all the crickets have finished jumping, it turns out that for pair i,ji, j with 1≤i<j≤44{1}\leq{i}<{j}\leq{44} , there was a cricket that jumped directly from point ii to point jj , without visiting any of the points in between the two. Determine the smallest number of crickets such that this is possible.

    Dataset text AI-MO AoPS. Quoted with source.

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