1.1 KiB
1.1 KiB
id | challengeType | title |
---|---|---|
5900f51d1000cf542c51002f | 5 | Problem 433: Steps in Euclid's algorithm |
Description
We have E(1,1) = 1, E(10,6) = 3 and E(6,10) = 4.
Define S(N) as the sum of E(x,y) for 1 ≤ x,y ≤ N. We have S(1) = 1, S(10) = 221 and S(100) = 39826.
Find S(5·106).
Instructions
Tests
tests:
- text: <code>euler433()</code> should return 326624372659664.
testString: assert.strictEqual(euler433(), 326624372659664, '<code>euler433()</code> should return 326624372659664.');
Challenge Seed
function euler433() {
// Good luck!
return true;
}
euler433();
Solution
// solution required