962. Angular Bisector and Tangent 2

Given is an integer sided triangle ABC with BCACAB.
k is the angular bisector of angle ACB.
m is the tangent at C to the circumscribed circle of ABC.
n is a line parallel to m through B.
The intersection of n and k is called E.

How many triangles ABC with a perimeter not exceeding 1000000 exist such that CE has integral length?

Note: This problem is a more difficult version of Problem 296. Please pay close attention to the differences between the two statements.

962. 角平分线和切线 2

给定一个满足 BCACAB 的、各边长都是整数的三角形 ABCkACB 的角平分线,mABC 的外接圆在 C 处的切线。过 Bm 的平行线,记其为 n,并记 n,k 的交点为 E

满足上述条件,周长不超过 1000000CE 长度是整数的三角形有多少个?

注意: 这是 296 题 的一个更困难的版本。请仔细留意这两题题面中的不同。


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