#731316 (C) No.1814 Uribo Road (Easy)

• 問題: No.1814 Uribo Road (Easy)
• ユーザー: ygussany
• 提出日時: 2022-01-15 20:01:26
• 言語: C (gcc 12.3.0)
• 結果: AC
• 実行時間: 24 ms / 2,000 ms
• コード長: 2,110 bytes
• コンパイル時間: 295 ms
• コンパイル使用メモリ: 32,000 KB
• 実行使用メモリ: 5,248 KB
• 最終ジャッジ日時: 2024-11-21 23:51:16
• 合計ジャッジ時間: 1,582 ms
• ジャッジサーバーID （参考情報）: judge1 / judge3

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	1 ms; 5,248 KB
testcase_01	AC	1 ms; 5,248 KB
testcase_02	AC	1 ms; 5,248 KB
testcase_03	AC	2 ms; 5,248 KB
testcase_04	AC	1 ms; 5,248 KB
testcase_05	AC	1 ms; 5,248 KB
testcase_06	AC	1 ms; 5,248 KB
testcase_07	AC	1 ms; 5,248 KB
testcase_08	AC	1 ms; 5,248 KB
testcase_09	AC	2 ms; 5,248 KB
testcase_10	AC	1 ms; 5,248 KB
testcase_11	AC	2 ms; 5,248 KB
testcase_12	AC	2 ms; 5,248 KB
testcase_13	AC	3 ms; 5,248 KB
testcase_14	AC	5 ms; 5,248 KB
testcase_15	AC	1 ms; 5,248 KB
testcase_16	AC	2 ms; 5,248 KB
testcase_17	AC	2 ms; 5,248 KB
testcase_18	AC	2 ms; 5,248 KB
testcase_19	AC	1 ms; 5,248 KB
testcase_20	AC	6 ms; 5,248 KB
testcase_21	AC	3 ms; 5,248 KB
testcase_22	AC	9 ms; 5,248 KB
testcase_23	AC	6 ms; 5,248 KB
testcase_24	AC	11 ms; 5,248 KB
testcase_25	AC	11 ms; 5,248 KB
testcase_26	AC	20 ms; 5,248 KB
testcase_27	AC	24 ms; 5,248 KB
testcase_28	AC	24 ms; 5,248 KB
testcase_29	AC	24 ms; 5,248 KB
testcase_30	AC	21 ms; 5,248 KB
testcase_31	AC	21 ms; 5,248 KB
testcase_32	AC	4 ms; 5,248 KB
testcase_33	AC	2 ms; 5,248 KB
testcase_34	AC	1 ms; 5,248 KB
testcase_35	AC	3 ms; 5,248 KB
testcase_36	AC	2 ms; 5,248 KB
testcase_37	AC	2 ms; 5,248 KB
testcase_38	AC	6 ms; 5,248 KB
testcase_39	AC	3 ms; 5,248 KB
testcase_40	AC	3 ms; 5,248 KB
testcase_41	AC	7 ms; 5,248 KB
testcase_42	AC	5 ms; 5,248 KB
testcase_43	AC	3 ms; 5,248 KB
testcase_44	AC	8 ms; 5,248 KB
testcase_45	AC	2 ms; 5,248 KB
testcase_46	AC	9 ms; 5,248 KB

ソースコード

#include <stdio.h>

const int bit[13] = {1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096};

typedef struct {
	int key, id[2];
} data;

typedef struct {
	data obj[40000000];
	int size;
} min_heap;

void push(min_heap* h, data x)
{
	int i = ++(h->size), j = i >> 1;
	data tmp;
	h->obj[i] = x;
	while (j > 0) {
		if (h->obj[i].key < h->obj[j].key) {
			tmp = h->obj[j];
			h->obj[j] = h->obj[i];
			h->obj[i] = tmp;
			i = j;
			j >>= 1;
		} else break;
	}
}

data pop(min_heap* h)
{
	int i = 1, j = 2;
	data output = h->obj[1], tmp;
	h->obj[1] = h->obj[(h->size)--];
	while (j <= h->size) {
		if (j < h->size && h->obj[j^1].key < h->obj[j].key) j ^= 1;
		if (h->obj[j].key < h->obj[i].key) {
			tmp = h->obj[j];
			h->obj[j] = h->obj[i];
			h->obj[i] = tmp;
			i = j;
			j <<= 1;
		} else break;
	}
	return output;
}

typedef struct Edge {
	struct Edge *next;
	int v, cost, flag;
} edge;

int main()
{
	int i, j, N, M, K, u, w, c, R[12];
	edge *adj[10001] = {}, e[40001], *p;
	scanf("%d %d %d", &N, &M, &K);
	for (i = 0; i < K; i++) scanf("%d", &(R[i]));
	for (i = 0; i < M; i++) {
		scanf("%d %d %d", &u, &w, &c);
		e[i*2].v = w;
		e[i*2+1].v = u;
		e[i*2].cost = c;
		e[i*2+1].cost = c;
		e[i*2].flag = 0;
		e[i*2+1].flag = 0;
		for (j = 0; j < K; j++) {
			if (R[j] == i + 1) {
				e[i*2].flag = bit[j];
				e[i*2+1].flag = bit[j];
			}
		}
		e[i*2].next = adj[u];
		e[i*2+1].next = adj[w];
		adj[u] = &(e[i*2]);
		adj[w] = &(e[i*2+1]);
	}
	
	const int sup = ((1 << 30) - 1) << 1;
	int dist[10001][4096];
	data d;
	min_heap h;
	h.size = 0;
	for (u = 1; u <= N; u++) for (i = 0; i < bit[K]; i++) dist[u][i] = sup;
	dist[1][0] = 0;
	d.key = 0;
	d.id[0] = 1;
	d.id[1] = 0;
	push(&h, d);
	while (h.size > 0) {
		d = pop(&h);
		u = d.id[0];
		i = d.id[1];
		if (d.key != dist[u][i]) continue;
		for (p = adj[u]; p != NULL; p = p->next) {
			w = p->v;
			j = i | p->flag;
			if (dist[w][j] > dist[u][i] + p->cost) {
				dist[w][j] = dist[u][i] + p->cost;
				d.key = dist[w][j];
				d.id[0] = w;
				d.id[1] = j;
				push(&h, d);
			}
		}
	}
	printf("%d\n", dist[N][bit[K]-1]);
	fflush(stdout);
	return 0;
}