768 B
768 B
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
5900f4c21000cf542c50ffd4 | Problem 340: Crazy Function | 5 | 301999 | problem-340-crazy-function |
--description--
For fixed integers a, b, c, define the crazy function F(n) as follows:
F(n) = n - c for all n > b
F(n) = F(a + F(a + F(a + F(a + n)))) for all n ≤ b.
Also, define S(a, b, c) = .
For example, if a = 50, b = 2000 and c = 40, then F(0) = 3240 and F(2000) = 2040. Also, S(50, 2000, 40) = 5204240.
Find the last 9 digits of S(217, 721, 127).
--hints--
euler340()
should return 291504964.
assert.strictEqual(euler340(), 291504964);
--seed--
--seed-contents--
function euler340() {
return true;
}
euler340();
--solutions--
// solution required