# Problem 373: Circumscribed Circles
Every triangle has a circumscribed circle that goes through the three
vertices. Consider all integer sided triangles for which the radius of
the circumscribed circle is integral as well. Let S(n) be the sum of the
radii of the circumscribed circles of all such triangles for which the
radius does not exceed n. S(100)=4950 and S(1200)=1653605. Find S(107).