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const express = require("express");
const app = express();

//使用するポートを指定する。
const port = 8080;
const server = app.listen(port, () => {
	// ポート設定時に実行される処理
	console.log(`Node.js is listening to PORT: ${ server.address().port }`);
});
app.listen(2020); // 複数ポートの指定も可。

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// c <= 3

// 一行
((s=0,c=3,len=900,ctx=canvas.getContext('2d'),m=([x,y,l])=>[[x,y,l],[x,y+l,l],[x+l,y+l,l],[x+l,y,l]])=>[...Array(c)].reduce((a,b,i)=>[...a,...((l=a[a.length-1][2]/3,o=[...Array(3**(i+1))].map((v,j)=>!j?l:(3*j+1)*l))=>o.reduce((c,x)=>[...c,...o.map((y)=>[x,y,l])].filter(([x,y],i)=>a.filter((v,i)=>i).map((v)=>m(v)).every((v)=>!(x>v[0][0]&&x<v[2][0]&&y>v[0][1]&&y<v[2][1]))),[])).call()],[[0,0,len],Array(3).fill(len/3)]).map((v)=>m(v)).forEach((c)=>[...c,c[0]].forEach(([x,y],i)=>new Promise((resolve)=>setTimeout(()=>resolve(i<1?ctx.moveTo(x,y):ctx.lineTo(x,y)),++s*10)).then(()=>ctx.stroke())))).call();

//複数行
(
	(s = 0, c = 3, len = 900, ctx = canvas.getContext('2d'), m = ([x, y, l]) => [[x, y, l], [x, y + l, l], [x + l, y + l, l], [x + l, y, l]]) =>
		[...Array(c)].reduce((a, b, i) =>
				[

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//Q2
require("fs").readFile("./attend", (err, text) => require("fs").readFile("./attend6", (err, text6) => `${text}`.split("\n").filter((v) => !!v).forEach((v) => console.log(`${v}${text6.includes(v.split(" ")[0]) ? "出" : "欠"}`) )))

//Q4.1
console.log("-1 4 5 2 42 421 44 311 -9 -11".split(" ").sort((a,b) => Number(a) > Number(b) ? 1 : -1).map((v,i,a) => `${v} ${ !i || String(a[i+1]).length !==  String(v).length ? "\n" : ""}` ).join(''))

//Q4.2
console.log("-1 +4 5 2 42 421 44 311 -9 -11".split(" ").sort((a,b) => Number(a) > Number(b) ? 1 : -1).map((v,i,a) => `${v} ${ !i || String(a[i+1]).length !==  String(Number(v)).length ? "\n" : ""}` ).join(''))

//Q6

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/*
 フルエ田山田エルフ
       田田田
     エ  エ  エ
   ル    ル    ル
 フ      フ      フ
 */


((string = '山田エルフ') => string.split('').reduce((arr, char, i) => !i ? [[(str) => str.reverse(), (str) => str.slice(1)].reduce((arr, func) => [...arr, ...func(string.split(''))], [])] : [...arr, arr[0].map((char2) => char2 === char || char2 === string.slice(0, 1) ? char : "  ")], []).forEach((str) => console.log(str.join("")))).call()

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<canvas id=canvas width="2000px" height="2000px"></canvas>

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// 一行
((L='L${R}FR${L}F${L}RF${R}L',R='R${L}FL${R}F${R}LF${L}R',ctx=canvas.getContext('2d'),len=10)=>[...Array(4)].reduce((p,c,i,a)=>p.replace(/\$\{(L|R)\}/g,i+1===a.length?'':(s)=>s.includes('L')?L:R),L).split("F").map((s)=>!(s.length%2)?0:s.slice(-1)==='L'?1:-1).reduce((a,lr,i)=>[...a,Object({d:(a[i].d+lr)%4<0?3:(a[i].d+lr)%4,x:a[i].x+Math.floor(Math.sin(a[i].d/2*Math.PI))*len,y:a[i].y+Math.floor(Math.sin((a[i].d-1)/2*Math.PI))*(-1*len),})],[{x:len,y:len,d:0}]).forEach(({x,y},i)=>i<2?ctx.moveTo(x,y):new Promise((resolve)=>setTimeout(()=>resolve(ctx.lineTo(x,y)),(i-1)*10)).then(()=>ctx.stroke()))).call();

// 分解
((L = 'L${R}FR${L}F${L}RF${R}L', R = 'R${L}FL${R}F${R}LF${L}R', ctx = canvas.getContext('2d') , len=10 ) =>
	[...Array(4)].reduce(
		(p, c , i, a) =>
			p.replace(/\$\{(L|R)\}/g, i + 1 === a.length ? '' : (s) => s.includes('L') ? L : R)
		, L).split("F")
	.map((s) => !(s.length % 2) ? 0 : s.slice(-1) === 'L' ? 1 : -1 )

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// 一行
((FizzBuzzArr = ["Fizz", "Buzz", "FizzBuzz"], digit = 3) =>[...Array(digit)].reduce((pV, cV, n) =>[...pV,...Array(FizzBuzzArr.length ** n + 1).fill([...Array(n + 1)]).map((arr, index) =>arr.map((v, i) =>FizzBuzzArr[parseInt(index / FizzBuzzArr.length ** i) % FizzBuzzArr.length]))],[]).map((fizzbuzz) =>Object.assign({fizzbuzz,answer: ((target =  [...Array((fizzbuzz.filter((fb) => fb === FizzBuzzArr[2]).length + 1) * 15)] .map((v, i) => !((i + 1) % 15) ? FizzBuzzArr[2] : !((i + 1) % 5) ? FizzBuzzArr[1] : !((i + 1) % 3) ? FizzBuzzArr[0] : "" )  .map((v, i, a) => v !== fizzbuzz[0] ? [] : a.slice(i).reduce((arr, v) => arr.filter((v) => !!v).join("/") === fizzbuzz.join("/") ? arr : [...arr, v], [] ) )  .map((arr, index) => arr.filter((v) => !!v).join("/").indexOf(fizzbuzz.join("/")) === 0 && arr.filter((v) => !!v).every((v, i) => v === fizzbuzz[i]) ? arr.map((v, i) => i + index + 1) : false )) =>target.some((v) => !!v) ?target.filter((v) => !!v).reduce((pArr, cArr) => !pArr || pArr.length > cArr.length ? cArr

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[...Array(4)].reduce((l, c, i, a) => i + 1 === a.length ? l.replace(/\$\{(L|R)\}/g, '') : l.replace(/\}/g, '#}').replace(/\$\{L#\}/g, 'L${R}FR${L}F${L}RF${R}L').replace(/\$\{R#\}/g, 'R${L}FL${R}F${R}LF${L}R'),'L${R}FR${L}F${L}RF${R}L').split("F").slice(0, -1).reduce(({ x, y, ctx, dir }, LR, i) => Object.assign({},{ d : dir = LR.split("").map((lr) => lr === "L" ? 1 : -1).reduce((dir, lr) => (dir + 90 * lr) >= 360 ? 0 : (dir + 90 * lr) < 0 ? 360 + (dir + 90 * lr) : (dir + 90 * lr) , dir), dir }, { xx: dir === 90 ? x += 10 : dir === 270 ?  x -= 10 : x, yy: dir === 0 ? y += 10 : dir === 180 ?  y -= 10 : y, },{ l: setTimeout( () => { ctx.lineTo(x, y),ctx.stroke() }, i * 10) }, { x, y, ctx, dir }), { x: 10, y: 10, dir: 0, c:[ctx = canvas.getContext('2d'), ctx.beginPath(), ctx.moveTo(10, 10)] , ctx})

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database.ref('list').once('value').then((snapshot) => {
  const list = getList(snapshot);
  riot.mount('List', { list });
  riot.mount('Add');
})

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<html>
	<head>
		<title>出欠表</title>
		<meta charset="utf-8" />
		<meta name="viewport" content="width=device-width, user-scalable=no" />
		<meta name="apple-mobile-web-app-capable" content="yes" />
		<link rel="stylesheet" href="./index.css" />
		<!-- firebase -->
		<script src="https://www.gstatic.com/firebasejs/3.6.2/firebase-app.js"></script>
		<script src="https://www.gstatic.com/firebasejs/3.6.2/firebase-database.js"></script>