freeCodeCamp/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-372-pencils-of-rays.md

---
id: 5900f4e11000cf542c50fff3
title: 'Problem 372: Pencils of rays'
challengeType: 5
forumTopicId: 302034
dashedName: problem-372-pencils-of-rays
---

# --description--

Let R(M, N) be the number of lattice points (x, y) which satisfy M

Note: represents the floor function.

# --hints--

`euler372()` should return 301450082318807040.

```js
assert.strictEqual(euler372(), 301450082318807040);
```

# --seed--

## --seed-contents--

```js
function euler372() {

  return true;
}

euler372();
```

# --solutions--

```js
// solution required
```