// 麻雀、向聴数の計算
 
const hands = [
	[ 5, 6, 7,11,12,13,15,16,17,19,19,21,22,23], /* 和了  [0] -1 */
	[ 3, 5, 6, 7,12,13,15,16,17,19,19,21,22,23], /* 聴牌  [1]  0 */
	[ 3, 5, 6,12,13,15,16,17,19,19,21,22,23,31], /* 1向聴 [2]  1 */
	[ 3, 5, 6,12,13,15,16,17,19,19,21,22,25,31], /* 2向聴 [3]  2 */
	[ 1, 5, 6, 7,11,13,14,17,18,20,23,24,26,31], /* 3向聴 [4]  3 */
	[ 2, 5, 8,10,10,11,14,14,19,20,22,24,24,27], /* 4向聴 [5]  4 */
	[ 0, 1, 1, 5, 7, 9,13,16,18,24,25,29,30,32], /* 5向聴 [6]  5 */
	[ 0, 1, 1, 5, 5, 7, 9,13,16,18,24,29,30,32], /* 6向聴 [7]  6 */
	[ 0, 5, 7, 9,13,17,18,24,28,29,30,31,32,33], /* 7向聴 [8]  7 */
	[ 0, 5, 9,13,17,18,21,24,28,29,30,31,32,33], /* 8向聴 [9]  8 */
];
 
const hand = hands[4];
 
const hand_pai = new Array(34);
hand_pai.fill(4);
for (let i = 0; i < hand.length; i++) {
	hand_pai[hand[i]]--;
}
 
let shanten = 14;
 
const pai = new Array(34);
pai.fill(4);
let count = 0;
 
let patterns = [];
 
const pattern = new Array(5);
 
function calc() {
	let c = -1;
	for (let i = 0; i < 34; i++) {
		c += Math.max(0, hand_pai[i] - pai[i]);
	}
	if (c < shanten) {
		shanten = c;
		patterns = [pattern.slice(0)];
	} else if (c === shanten) {
		patterns.push(pattern.slice(0));
	}
}
 
function juntsu(rem, p) {
	if (rem === 0) {
		count++;
		calc();
		return;
	}
	for (let i = p; i < 27; i++) {
		if (i % 9 > 6) continue;
		if (pai[i] === 0) continue;
		if (pai[i+1] === 0) continue;
		if (pai[i+2] === 0) continue;
		pai[i]--;
		pai[i+1]--;
		pai[i+2]--;
		pattern[5-rem] = 10101 * (i+1) + 102;
		juntsu(rem-1, i);
		pai[i]++;
		pai[i+1]++;
		pai[i+2]++;
 
	}
}
 
function mentsu(rem, p) {
	if (rem === 0) {
		count++;
		calc();
		return;
	}
	for (let i = p; i < 34; i++) {
		if (pai[i] < 4) continue;
		pai[i] -= 3;
		pattern[5-rem] = 10101 * (i+1);
		mentsu(rem-1, i+1);
		juntsu(rem-1, 0);
		pai[i] += 3;
	}
}
 
function atama() {
	for (let i = 0; i < 34; i++) {
		pai[i] -= 2;
		pattern[0] = 101 * (i+1);
		mentsu(4, 0);
		juntsu(4, 0);
		pai[i] += 2;
	}
}
 
atama();
patterns.sort();
 
console.log(count);
console.log(hand.map((e)=>e+1));
console.log(shanten);
console.log(patterns.length);
console.log(patterns);
 
 

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