Problem 1387. Points on a circle.

Solution 1857021

Submitted on 24 Jun 2019 by David Hill

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Test	Status	Code Input and Output
1	Pass	assert(isequal(circle_points(1),4))
2	Pass	assert(isequal(circle_points(3),4))
3	Pass	assert(isequal(circle_points(5),12))
4	Pass	assert(isequal(circle_points(65),36))
5	Pass	assert(isequal(circle_points(64090),324))
6	Pass	assert(isequal(circle_points(326441),12))
7	Pass	assert(isequal(circle_points(359125),420))
8	Pass	assert(isequal(circle_points(1000001),36))
9	Pass	assert(isequal(circle_points(2417899275),20))
10	Pass	assert(isequal(circle_points(31432690549),8748))
11	Pass	assert(isequal(circle_points(11472932050385),78732))
12	Pass	assert(isequal(circle_points(1021090952484265),236196))
13	Pass	assert(isequal(circle_points(6095127531752228),78732))
14	Pass	assert(isequal(circle_points(5*circle_points(630209)),12))
15	Pass	y=arrayfun(@(x) circle_points(x),1000:2000); [m1,m2]=max(y); assert(isequal(m1-m2,2)); [h1,h2]=hist(y,unique(y)); assert(isequal(prod(h1-h2),1399066124544000))