답안 #1095704

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1095704	2024-10-03T02:47:43 Z	vjudge1	Construction Project 2 (JOI24_ho_t2)	C++11	100 / 100	153 ms	23156 KB

Main

#include <bits/stdc++.h>

using namespace std;

vector<pair<int, int>> g[200005];

long long d[2][200005];

void dij(int i, int s) {
	priority_queue<pair<long long, int>, vector<pair<long long, int>>, greater<pair<long long, int>>> q;
	q.emplace(0, s);
	d[i][s] = 0;
	while (q.size()) {
		int u = q.top().second;
		long long dl = q.top().first;
		q.pop();
		if (dl > d[i][u]) {
			continue;
		}
		for (pair<int, int> p: g[u]) {
			int v = p.first, w = p.second;
			if (d[i][v] > d[i][u] + w) {
				d[i][v] = d[i][u] + w;
				q.emplace(d[i][v], v);
			}
		}
	}
}

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	int n, m, s, t, l;
	long long k;
	
	cin >> n >> m >> s >> t >> l >> k;
		
	for (int i = 1; i <= m; ++i) {
		int u, v, w;
		cin >> u >> v >> w;
		g[u].emplace_back(v, w);
		g[v].emplace_back(u, w);
	}

	memset(d, 0x3f3f3f3f, sizeof d);
	
	dij(0, s);
	dij(1, t);
	
	if (d[0][t] <= k) {
		cout << 1ll * n * (n - 1) / 2 << '\n';
		return 0;
	}
	
	vector<long long> v;
	
	for (int i = 1; i <= n; ++i) {
		v.emplace_back(d[1][i]);
	}
	
	sort(v.begin(), v.end());
	
	long long ans = 0;
	
	for (int i = 1; i <= n; ++i) {
		int j = upper_bound(v.begin(), v.end(), k - l - d[0][i]) - v.begin();
		if (d[1][i] <= k - l - d[0][i]) {
			j--;
		}
		ans += j;
	}
	
	cout << ans << '\n';
	
}
/*
18 21
4 8 678730772 3000000062
5 13 805281073
8 17 80983648
3 8 996533440
10 16 514277428
2 5 57914340
6 11 966149890
8 12 532734310
2 9 188599710
2 3 966306014
12 16 656457780
16 18 662633078
1 15 698078877
2 8 665665772
2 6 652261981
14 15 712798281
7 13 571169114
13 14 860543313
6 7 454251187
9 14 293590683
6 14 959532841
3 11 591245645
*/

Subtask #1
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	8280 KB	Output is correct
2	Correct	3 ms	8024 KB	Output is correct
3	Correct	4 ms	8284 KB	Output is correct
4	Correct	4 ms	8028 KB	Output is correct
5	Correct	4 ms	8284 KB	Output is correct
6	Correct	4 ms	8284 KB	Output is correct
7	Correct	58 ms	17936 KB	Output is correct
8	Correct	68 ms	18168 KB	Output is correct
9	Correct	64 ms	18264 KB	Output is correct
10	Correct	4 ms	8028 KB	Output is correct
11	Correct	4 ms	8024 KB	Output is correct
12	Correct	4 ms	8284 KB	Output is correct
13	Correct	5 ms	8280 KB	Output is correct
14	Correct	36 ms	14536 KB	Output is correct
15	Correct	130 ms	17256 KB	Output is correct
16	Correct	4 ms	8280 KB	Output is correct
17	Correct	4 ms	8284 KB	Output is correct
18	Correct	57 ms	16544 KB	Output is correct
19	Correct	3 ms	8284 KB	Output is correct
20	Correct	3 ms	8284 KB	Output is correct
21	Correct	7 ms	8284 KB	Output is correct
22	Correct	4 ms	8284 KB	Output is correct
23	Correct	36 ms	14512 KB	Output is correct
24	Correct	130 ms	17348 KB	Output is correct
25	Correct	4 ms	8280 KB	Output is correct
26	Correct	5 ms	8504 KB	Output is correct
27	Correct	78 ms	23128 KB	Output is correct
28	Correct	58 ms	16540 KB	Output is correct
29	Correct	68 ms	15556 KB	Output is correct

Subtask #2
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	8028 KB	Output is correct
2	Correct	3 ms	8284 KB	Output is correct
3	Correct	4 ms	8284 KB	Output is correct
4	Correct	4 ms	8028 KB	Output is correct
5	Correct	4 ms	8028 KB	Output is correct
6	Correct	3 ms	8228 KB	Output is correct
7	Correct	4 ms	8280 KB	Output is correct
8	Correct	4 ms	8280 KB	Output is correct
9	Correct	5 ms	8284 KB	Output is correct
10	Correct	4 ms	8284 KB	Output is correct
11	Correct	4 ms	8184 KB	Output is correct
12	Correct	4 ms	8280 KB	Output is correct
13	Correct	3 ms	8028 KB	Output is correct
14	Correct	4 ms	8028 KB	Output is correct
15	Correct	3 ms	8284 KB	Output is correct
16	Correct	5 ms	8028 KB	Output is correct
17	Correct	4 ms	8028 KB	Output is correct
18	Correct	4 ms	8028 KB	Output is correct
19	Correct	4 ms	8028 KB	Output is correct
20	Correct	4 ms	8280 KB	Output is correct
21	Correct	4 ms	8284 KB	Output is correct
22	Correct	3 ms	8028 KB	Output is correct
23	Correct	4 ms	8284 KB	Output is correct
24	Correct	3 ms	8284 KB	Output is correct
25	Correct	3 ms	8284 KB	Output is correct
26	Correct	3 ms	8028 KB	Output is correct
27	Correct	3 ms	8028 KB	Output is correct
28	Correct	4 ms	8028 KB	Output is correct
29	Correct	3 ms	8028 KB	Output is correct
30	Correct	3 ms	8284 KB	Output is correct
31	Correct	4 ms	8284 KB	Output is correct
32	Correct	3 ms	8284 KB	Output is correct

Subtask #3
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	8028 KB	Output is correct
2	Correct	3 ms	8284 KB	Output is correct
3	Correct	4 ms	8284 KB	Output is correct
4	Correct	4 ms	8028 KB	Output is correct
5	Correct	4 ms	8028 KB	Output is correct
6	Correct	3 ms	8228 KB	Output is correct
7	Correct	4 ms	8280 KB	Output is correct
8	Correct	4 ms	8280 KB	Output is correct
9	Correct	5 ms	8284 KB	Output is correct
10	Correct	4 ms	8284 KB	Output is correct
11	Correct	4 ms	8184 KB	Output is correct
12	Correct	4 ms	8280 KB	Output is correct
13	Correct	3 ms	8028 KB	Output is correct
14	Correct	4 ms	8028 KB	Output is correct
15	Correct	3 ms	8284 KB	Output is correct
16	Correct	5 ms	8028 KB	Output is correct
17	Correct	4 ms	8028 KB	Output is correct
18	Correct	4 ms	8028 KB	Output is correct
19	Correct	4 ms	8028 KB	Output is correct
20	Correct	4 ms	8280 KB	Output is correct
21	Correct	4 ms	8284 KB	Output is correct
22	Correct	3 ms	8028 KB	Output is correct
23	Correct	4 ms	8284 KB	Output is correct
24	Correct	3 ms	8284 KB	Output is correct
25	Correct	3 ms	8284 KB	Output is correct
26	Correct	3 ms	8028 KB	Output is correct
27	Correct	3 ms	8028 KB	Output is correct
28	Correct	4 ms	8028 KB	Output is correct
29	Correct	3 ms	8028 KB	Output is correct
30	Correct	3 ms	8284 KB	Output is correct
31	Correct	4 ms	8284 KB	Output is correct
32	Correct	3 ms	8284 KB	Output is correct
33	Correct	4 ms	8284 KB	Output is correct
34	Correct	4 ms	8428 KB	Output is correct
35	Correct	4 ms	8284 KB	Output is correct
36	Correct	5 ms	8284 KB	Output is correct
37	Correct	4 ms	8192 KB	Output is correct
38	Correct	4 ms	8284 KB	Output is correct
39	Correct	5 ms	8280 KB	Output is correct
40	Correct	4 ms	8348 KB	Output is correct
41	Correct	4 ms	8284 KB	Output is correct
42	Correct	4 ms	8348 KB	Output is correct
43	Correct	5 ms	8284 KB	Output is correct
44	Correct	4 ms	8284 KB	Output is correct
45	Correct	5 ms	8284 KB	Output is correct
46	Correct	5 ms	8284 KB	Output is correct
47	Correct	5 ms	8384 KB	Output is correct
48	Correct	4 ms	8284 KB	Output is correct
49	Correct	5 ms	8284 KB	Output is correct
50	Correct	4 ms	8280 KB	Output is correct
51	Correct	4 ms	8284 KB	Output is correct
52	Correct	5 ms	8284 KB	Output is correct
53	Correct	5 ms	8284 KB	Output is correct
54	Correct	5 ms	8284 KB	Output is correct
55	Correct	4 ms	8424 KB	Output is correct
56	Correct	7 ms	8284 KB	Output is correct
57	Correct	4 ms	8284 KB	Output is correct
58	Correct	4 ms	8284 KB	Output is correct

Subtask #4
47.0 / 47.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	8280 KB	Output is correct
2	Correct	3 ms	8024 KB	Output is correct
3	Correct	4 ms	8284 KB	Output is correct
4	Correct	4 ms	8028 KB	Output is correct
5	Correct	4 ms	8284 KB	Output is correct
6	Correct	4 ms	8284 KB	Output is correct
7	Correct	58 ms	17936 KB	Output is correct
8	Correct	68 ms	18168 KB	Output is correct
9	Correct	64 ms	18264 KB	Output is correct
10	Correct	4 ms	8028 KB	Output is correct
11	Correct	4 ms	8024 KB	Output is correct
12	Correct	4 ms	8284 KB	Output is correct
13	Correct	5 ms	8280 KB	Output is correct
14	Correct	36 ms	14536 KB	Output is correct
15	Correct	130 ms	17256 KB	Output is correct
16	Correct	4 ms	8280 KB	Output is correct
17	Correct	4 ms	8284 KB	Output is correct
18	Correct	57 ms	16544 KB	Output is correct
19	Correct	3 ms	8284 KB	Output is correct
20	Correct	3 ms	8284 KB	Output is correct
21	Correct	7 ms	8284 KB	Output is correct
22	Correct	4 ms	8284 KB	Output is correct
23	Correct	36 ms	14512 KB	Output is correct
24	Correct	130 ms	17348 KB	Output is correct
25	Correct	4 ms	8280 KB	Output is correct
26	Correct	5 ms	8504 KB	Output is correct
27	Correct	78 ms	23128 KB	Output is correct
28	Correct	58 ms	16540 KB	Output is correct
29	Correct	68 ms	15556 KB	Output is correct
30	Correct	3 ms	8028 KB	Output is correct
31	Correct	3 ms	8284 KB	Output is correct
32	Correct	4 ms	8284 KB	Output is correct
33	Correct	4 ms	8028 KB	Output is correct
34	Correct	4 ms	8028 KB	Output is correct
35	Correct	3 ms	8228 KB	Output is correct
36	Correct	4 ms	8280 KB	Output is correct
37	Correct	4 ms	8280 KB	Output is correct
38	Correct	5 ms	8284 KB	Output is correct
39	Correct	4 ms	8284 KB	Output is correct
40	Correct	4 ms	8184 KB	Output is correct
41	Correct	4 ms	8280 KB	Output is correct
42	Correct	3 ms	8028 KB	Output is correct
43	Correct	4 ms	8028 KB	Output is correct
44	Correct	3 ms	8284 KB	Output is correct
45	Correct	5 ms	8028 KB	Output is correct
46	Correct	4 ms	8028 KB	Output is correct
47	Correct	4 ms	8028 KB	Output is correct
48	Correct	4 ms	8028 KB	Output is correct
49	Correct	4 ms	8280 KB	Output is correct
50	Correct	4 ms	8284 KB	Output is correct
51	Correct	3 ms	8028 KB	Output is correct
52	Correct	4 ms	8284 KB	Output is correct
53	Correct	3 ms	8284 KB	Output is correct
54	Correct	3 ms	8284 KB	Output is correct
55	Correct	3 ms	8028 KB	Output is correct
56	Correct	3 ms	8028 KB	Output is correct
57	Correct	4 ms	8028 KB	Output is correct
58	Correct	3 ms	8028 KB	Output is correct
59	Correct	3 ms	8284 KB	Output is correct
60	Correct	4 ms	8284 KB	Output is correct
61	Correct	3 ms	8284 KB	Output is correct
62	Correct	4 ms	8284 KB	Output is correct
63	Correct	4 ms	8428 KB	Output is correct
64	Correct	4 ms	8284 KB	Output is correct
65	Correct	5 ms	8284 KB	Output is correct
66	Correct	4 ms	8192 KB	Output is correct
67	Correct	4 ms	8284 KB	Output is correct
68	Correct	5 ms	8280 KB	Output is correct
69	Correct	4 ms	8348 KB	Output is correct
70	Correct	4 ms	8284 KB	Output is correct
71	Correct	4 ms	8348 KB	Output is correct
72	Correct	5 ms	8284 KB	Output is correct
73	Correct	4 ms	8284 KB	Output is correct
74	Correct	5 ms	8284 KB	Output is correct
75	Correct	5 ms	8284 KB	Output is correct
76	Correct	5 ms	8384 KB	Output is correct
77	Correct	4 ms	8284 KB	Output is correct
78	Correct	5 ms	8284 KB	Output is correct
79	Correct	4 ms	8280 KB	Output is correct
80	Correct	4 ms	8284 KB	Output is correct
81	Correct	5 ms	8284 KB	Output is correct
82	Correct	5 ms	8284 KB	Output is correct
83	Correct	5 ms	8284 KB	Output is correct
84	Correct	4 ms	8424 KB	Output is correct
85	Correct	7 ms	8284 KB	Output is correct
86	Correct	4 ms	8284 KB	Output is correct
87	Correct	4 ms	8284 KB	Output is correct
88	Correct	83 ms	15668 KB	Output is correct
89	Correct	82 ms	15672 KB	Output is correct
90	Correct	79 ms	17384 KB	Output is correct
91	Correct	38 ms	13952 KB	Output is correct
92	Correct	40 ms	13904 KB	Output is correct
93	Correct	45 ms	14616 KB	Output is correct
94	Correct	40 ms	14464 KB	Output is correct
95	Correct	153 ms	18212 KB	Output is correct
96	Correct	146 ms	16832 KB	Output is correct
97	Correct	145 ms	16692 KB	Output is correct
98	Correct	125 ms	16704 KB	Output is correct
99	Correct	58 ms	16584 KB	Output is correct
100	Correct	60 ms	16656 KB	Output is correct
101	Correct	40 ms	13904 KB	Output is correct
102	Correct	37 ms	13908 KB	Output is correct
103	Correct	42 ms	14500 KB	Output is correct
104	Correct	49 ms	14544 KB	Output is correct
105	Correct	143 ms	18336 KB	Output is correct
106	Correct	138 ms	18196 KB	Output is correct
107	Correct	121 ms	23156 KB	Output is correct
108	Correct	143 ms	23132 KB	Output is correct
109	Correct	69 ms	16536 KB	Output is correct
110	Correct	64 ms	16540 KB	Output is correct
111	Correct	81 ms	15616 KB	Output is correct
112	Correct	82 ms	15588 KB	Output is correct

답안 #1095704

Compilation message

Subtask #1 8.0 / 8.0

Subtask #2 16.0 / 16.0

Subtask #3 29.0 / 29.0

Subtask #4 47.0 / 47.0

Subtask #1
8.0 / 8.0

Subtask #2
16.0 / 16.0

Subtask #3
29.0 / 29.0

Subtask #4
47.0 / 47.0