2.2 KiB

Raw Blame History

id	title	challengeType	forumTopicId	dashedName
5900f54c1000cf542c51005f	Problema 480: L'ultima domanda	5	302158	problem-480-the-last-question

--description--

Considera tutte le parole che possono essere formate selezionando lettere, in qualsiasi ordine, dalla frase:

\mathbf{\text{thereisasyetinsufficientdataforameaningfulanswer}}

Supponi che quelle con 15 lettere o meno sono elencate in ordine alfabetico e numerate sequenzialmente iniziando da 1.

La lista includerebbe:

\begin{align} & 1: \text{a} \\\\ & 2: \text{aa} \\\\ & 3: \text{aaa} \\\\ & 4: \text{aaaa} \\\\ & 5: \text{aaaaa} \\\\ & 6: \text{aaaaaa} \\\\ & 7: \text{aaaaaac} \\\\ & 8: \text{aaaaaacd} \\\\ & 9: \text{aaaaaacde} \\\\ & 10: \text{aaaaaacdee} \\\\ & 11: \text{aaaaaacdeee} \\\\ & 12: \text{aaaaaacdeeee} \\\\ & 13: \text{aaaaaacdeeeee} \\\\ & 14: \text{aaaaaacdeeeeee} \\\\ & 15: \text{aaaaaacdeeeeeef} \\\\ & 16: \text{aaaaaacdeeeeeeg} \\\\ & 17: \text{aaaaaacdeeeeeeh} \\\\ & \ldots \\\\ & 28: \text{aaaaaacdeeeeeey} \\\\ & 29: \text{aaaaaacdeeeeef} \\\\ & 30: \text{aaaaaacdeeeeefe} \\\\ & \ldots \\\\ & 115246685191495242: \text{euleoywuttttsss} \\\\ & 115246685191495243: \text{euler} \\\\ & 115246685191495244: \text{eulera} \\\\ & ... \\\\ & 525069350231428029: \text{ywuuttttssssrrr} \\\\ \end{align}

Sia P(w) la posizione della parola w.

Sia W(p) la parola in posizione p.

Possiamo vedere che P(w) e W(p) sono operazioni inverse: P(W(p)) = p e W(P(w)) = w.

Esempi:

\begin{align} & W(10) = \text{ aaaaaacdee} \\\\ & P(\text{aaaaaacdee}) = 10 \\\\ & W(115246685191495243) = \text{ euler} \\\\ & P(\text{euler}) = 115246685191495243 \\\\ \end{align}

Trova $W(P(\text{legionary}) + P(\text{calorimeters}) - P(\text{annihilate}) + P(\text{orchestrated}) - P(\text{fluttering})).$

Dai la tua risposta usando caratteri minuscoli (senza punteggiatura o spazi).

--hints--

euler480() dovrebbe restituire una stringa.

assert(typeof euler480() === 'string');

euler480() dovrebbe restituire la stringa turnthestarson.

assert.strictEqual(euler480(), 'turnthestarson');

--seed--

--seed-contents--

function euler480() {

  return true;
}

euler480();

--solutions--

// solution required

2.2 KiB Raw Blame History