2018-10-10 22:03:03 +00:00
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---
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id: 5900f4241000cf542c50ff37
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2020-12-16 07:37:30 +00:00
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title: 问题184:包含原点的三角形
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2018-10-10 22:03:03 +00:00
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challengeType: 5
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videoUrl: ''
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2021-01-13 02:31:00 +00:00
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dashedName: problem-184-triangles-containing-the-origin
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2018-10-10 22:03:03 +00:00
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---
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2020-12-16 07:37:30 +00:00
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# --description--
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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考虑点(x,y)的集合Ir,其中半径为r的圆内部的整数坐标以原点为中心,即x2 + y2 <r2。对于半径为2,I2包含九个点(0,0),(1,0),(1,1),(0,1),( - 1,1),( - 1,0),( -1,-1),(0,-1)和(1,-1)。在I2中有八个三角形具有全部三个顶点,其中包含内部的原点。其中两个如下所示,其他通过旋转从这些中获得。
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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对于半径为3,有360个三角形包含内部的原点并且所有顶点都在I3中,而对于I5,该数字是10600。
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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有多少个三角形包含内部的原点并且在I105中包含所有三个顶点?
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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# --hints--
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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`euler184()`应返回1725323624056。
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2018-10-10 22:03:03 +00:00
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```js
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2020-12-16 07:37:30 +00:00
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assert.strictEqual(euler184(), 1725323624056);
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2018-10-10 22:03:03 +00:00
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```
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2021-01-13 02:31:00 +00:00
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# --seed--
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## --seed-contents--
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```js
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function euler184() {
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return true;
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}
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euler184();
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```
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2020-12-16 07:37:30 +00:00
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# --solutions--
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2020-08-13 15:24:35 +00:00
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2021-01-13 02:31:00 +00:00
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```js
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// solution required
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```
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