답안 #1095703

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1095703	2024-10-03T02:47:13 Z	zaza	Construction Project 2 (JOI24_ho_t2)	C++14	100 / 100	158 ms	27836 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	3 ms	8284 KB	Output is correct
2	Correct	4 ms	8192 KB	Output is correct
3	Correct	3 ms	8284 KB	Output is correct
4	Correct	3 ms	8284 KB	Output is correct
5	Correct	4 ms	8284 KB	Output is correct
6	Correct	4 ms	8284 KB	Output is correct
7	Correct	56 ms	20360 KB	Output is correct
8	Correct	65 ms	20332 KB	Output is correct
9	Correct	69 ms	20844 KB	Output is correct
10	Correct	4 ms	8284 KB	Output is correct
11	Correct	4 ms	8284 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	16088 KB	Output is correct
15	Correct	129 ms	20368 KB	Output is correct
16	Correct	4 ms	8280 KB	Output is correct
17	Correct	4 ms	8284 KB	Output is correct
18	Correct	63 ms	19472 KB	Output is correct
19	Correct	3 ms	8284 KB	Output is correct
20	Correct	3 ms	8284 KB	Output is correct
21	Correct	5 ms	8284 KB	Output is correct
22	Correct	4 ms	8404 KB	Output is correct
23	Correct	39 ms	16080 KB	Output is correct
24	Correct	129 ms	20236 KB	Output is correct
25	Correct	3 ms	8284 KB	Output is correct
26	Correct	4 ms	8540 KB	Output is correct
27	Correct	79 ms	26284 KB	Output is correct
28	Correct	62 ms	18840 KB	Output is correct
29	Correct	54 ms	18376 KB	Output is correct

Subtask #2
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	8024 KB	Output is correct
2	Correct	4 ms	8024 KB	Output is correct
3	Correct	3 ms	8280 KB	Output is correct
4	Correct	4 ms	8284 KB	Output is correct
5	Correct	5 ms	8280 KB	Output is correct
6	Correct	3 ms	8284 KB	Output is correct
7	Correct	4 ms	8280 KB	Output is correct
8	Correct	4 ms	8060 KB	Output is correct
9	Correct	4 ms	8284 KB	Output is correct
10	Correct	4 ms	8284 KB	Output is correct
11	Correct	4 ms	8536 KB	Output is correct
12	Correct	4 ms	8044 KB	Output is correct
13	Correct	4 ms	8284 KB	Output is correct
14	Correct	4 ms	8232 KB	Output is correct
15	Correct	4 ms	8284 KB	Output is correct
16	Correct	4 ms	8284 KB	Output is correct
17	Correct	4 ms	8284 KB	Output is correct
18	Correct	4 ms	8028 KB	Output is correct
19	Correct	3 ms	8284 KB	Output is correct
20	Correct	3 ms	8284 KB	Output is correct
21	Correct	5 ms	8284 KB	Output is correct
22	Correct	3 ms	8284 KB	Output is correct
23	Correct	4 ms	8184 KB	Output is correct
24	Correct	4 ms	8280 KB	Output is correct
25	Correct	3 ms	8240 KB	Output is correct
26	Correct	4 ms	8284 KB	Output is correct
27	Correct	4 ms	8232 KB	Output is correct
28	Correct	4 ms	8280 KB	Output is correct
29	Correct	4 ms	8284 KB	Output is correct
30	Correct	4 ms	8284 KB	Output is correct
31	Correct	3 ms	8284 KB	Output is correct
32	Correct	3 ms	8228 KB	Output is correct

Subtask #3
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	8024 KB	Output is correct
2	Correct	4 ms	8024 KB	Output is correct
3	Correct	3 ms	8280 KB	Output is correct
4	Correct	4 ms	8284 KB	Output is correct
5	Correct	5 ms	8280 KB	Output is correct
6	Correct	3 ms	8284 KB	Output is correct
7	Correct	4 ms	8280 KB	Output is correct
8	Correct	4 ms	8060 KB	Output is correct
9	Correct	4 ms	8284 KB	Output is correct
10	Correct	4 ms	8284 KB	Output is correct
11	Correct	4 ms	8536 KB	Output is correct
12	Correct	4 ms	8044 KB	Output is correct
13	Correct	4 ms	8284 KB	Output is correct
14	Correct	4 ms	8232 KB	Output is correct
15	Correct	4 ms	8284 KB	Output is correct
16	Correct	4 ms	8284 KB	Output is correct
17	Correct	4 ms	8284 KB	Output is correct
18	Correct	4 ms	8028 KB	Output is correct
19	Correct	3 ms	8284 KB	Output is correct
20	Correct	3 ms	8284 KB	Output is correct
21	Correct	5 ms	8284 KB	Output is correct
22	Correct	3 ms	8284 KB	Output is correct
23	Correct	4 ms	8184 KB	Output is correct
24	Correct	4 ms	8280 KB	Output is correct
25	Correct	3 ms	8240 KB	Output is correct
26	Correct	4 ms	8284 KB	Output is correct
27	Correct	4 ms	8232 KB	Output is correct
28	Correct	4 ms	8280 KB	Output is correct
29	Correct	4 ms	8284 KB	Output is correct
30	Correct	4 ms	8284 KB	Output is correct
31	Correct	3 ms	8284 KB	Output is correct
32	Correct	3 ms	8228 KB	Output is correct
33	Correct	4 ms	8284 KB	Output is correct
34	Correct	4 ms	8280 KB	Output is correct
35	Correct	4 ms	8284 KB	Output is correct
36	Correct	6 ms	8284 KB	Output is correct
37	Correct	4 ms	8380 KB	Output is correct
38	Correct	4 ms	8284 KB	Output is correct
39	Correct	4 ms	8284 KB	Output is correct
40	Correct	5 ms	8536 KB	Output is correct
41	Correct	4 ms	8308 KB	Output is correct
42	Correct	4 ms	8284 KB	Output is correct
43	Correct	6 ms	8284 KB	Output is correct
44	Correct	6 ms	8284 KB	Output is correct
45	Correct	5 ms	8284 KB	Output is correct
46	Correct	5 ms	8280 KB	Output is correct
47	Correct	5 ms	8496 KB	Output is correct
48	Correct	5 ms	8284 KB	Output is correct
49	Correct	4 ms	8284 KB	Output is correct
50	Correct	4 ms	8284 KB	Output is correct
51	Correct	5 ms	8280 KB	Output is correct
52	Correct	6 ms	8284 KB	Output is correct
53	Correct	5 ms	8540 KB	Output is correct
54	Correct	5 ms	8536 KB	Output is correct
55	Correct	4 ms	8284 KB	Output is correct
56	Correct	5 ms	8456 KB	Output is correct
57	Correct	5 ms	8284 KB	Output is correct
58	Correct	5 ms	8280 KB	Output is correct

Subtask #4
47.0 / 47.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	8284 KB	Output is correct
2	Correct	4 ms	8192 KB	Output is correct
3	Correct	3 ms	8284 KB	Output is correct
4	Correct	3 ms	8284 KB	Output is correct
5	Correct	4 ms	8284 KB	Output is correct
6	Correct	4 ms	8284 KB	Output is correct
7	Correct	56 ms	20360 KB	Output is correct
8	Correct	65 ms	20332 KB	Output is correct
9	Correct	69 ms	20844 KB	Output is correct
10	Correct	4 ms	8284 KB	Output is correct
11	Correct	4 ms	8284 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	16088 KB	Output is correct
15	Correct	129 ms	20368 KB	Output is correct
16	Correct	4 ms	8280 KB	Output is correct
17	Correct	4 ms	8284 KB	Output is correct
18	Correct	63 ms	19472 KB	Output is correct
19	Correct	3 ms	8284 KB	Output is correct
20	Correct	3 ms	8284 KB	Output is correct
21	Correct	5 ms	8284 KB	Output is correct
22	Correct	4 ms	8404 KB	Output is correct
23	Correct	39 ms	16080 KB	Output is correct
24	Correct	129 ms	20236 KB	Output is correct
25	Correct	3 ms	8284 KB	Output is correct
26	Correct	4 ms	8540 KB	Output is correct
27	Correct	79 ms	26284 KB	Output is correct
28	Correct	62 ms	18840 KB	Output is correct
29	Correct	54 ms	18376 KB	Output is correct
30	Correct	3 ms	8024 KB	Output is correct
31	Correct	4 ms	8024 KB	Output is correct
32	Correct	3 ms	8280 KB	Output is correct
33	Correct	4 ms	8284 KB	Output is correct
34	Correct	5 ms	8280 KB	Output is correct
35	Correct	3 ms	8284 KB	Output is correct
36	Correct	4 ms	8280 KB	Output is correct
37	Correct	4 ms	8060 KB	Output is correct
38	Correct	4 ms	8284 KB	Output is correct
39	Correct	4 ms	8284 KB	Output is correct
40	Correct	4 ms	8536 KB	Output is correct
41	Correct	4 ms	8044 KB	Output is correct
42	Correct	4 ms	8284 KB	Output is correct
43	Correct	4 ms	8232 KB	Output is correct
44	Correct	4 ms	8284 KB	Output is correct
45	Correct	4 ms	8284 KB	Output is correct
46	Correct	4 ms	8284 KB	Output is correct
47	Correct	4 ms	8028 KB	Output is correct
48	Correct	3 ms	8284 KB	Output is correct
49	Correct	3 ms	8284 KB	Output is correct
50	Correct	5 ms	8284 KB	Output is correct
51	Correct	3 ms	8284 KB	Output is correct
52	Correct	4 ms	8184 KB	Output is correct
53	Correct	4 ms	8280 KB	Output is correct
54	Correct	3 ms	8240 KB	Output is correct
55	Correct	4 ms	8284 KB	Output is correct
56	Correct	4 ms	8232 KB	Output is correct
57	Correct	4 ms	8280 KB	Output is correct
58	Correct	4 ms	8284 KB	Output is correct
59	Correct	4 ms	8284 KB	Output is correct
60	Correct	3 ms	8284 KB	Output is correct
61	Correct	3 ms	8228 KB	Output is correct
62	Correct	4 ms	8284 KB	Output is correct
63	Correct	4 ms	8280 KB	Output is correct
64	Correct	4 ms	8284 KB	Output is correct
65	Correct	6 ms	8284 KB	Output is correct
66	Correct	4 ms	8380 KB	Output is correct
67	Correct	4 ms	8284 KB	Output is correct
68	Correct	4 ms	8284 KB	Output is correct
69	Correct	5 ms	8536 KB	Output is correct
70	Correct	4 ms	8308 KB	Output is correct
71	Correct	4 ms	8284 KB	Output is correct
72	Correct	6 ms	8284 KB	Output is correct
73	Correct	6 ms	8284 KB	Output is correct
74	Correct	5 ms	8284 KB	Output is correct
75	Correct	5 ms	8280 KB	Output is correct
76	Correct	5 ms	8496 KB	Output is correct
77	Correct	5 ms	8284 KB	Output is correct
78	Correct	4 ms	8284 KB	Output is correct
79	Correct	4 ms	8284 KB	Output is correct
80	Correct	5 ms	8280 KB	Output is correct
81	Correct	6 ms	8284 KB	Output is correct
82	Correct	5 ms	8540 KB	Output is correct
83	Correct	5 ms	8536 KB	Output is correct
84	Correct	4 ms	8284 KB	Output is correct
85	Correct	5 ms	8456 KB	Output is correct
86	Correct	5 ms	8284 KB	Output is correct
87	Correct	5 ms	8280 KB	Output is correct
88	Correct	81 ms	20308 KB	Output is correct
89	Correct	94 ms	20328 KB	Output is correct
90	Correct	83 ms	21928 KB	Output is correct
91	Correct	37 ms	17240 KB	Output is correct
92	Correct	37 ms	17172 KB	Output is correct
93	Correct	45 ms	16844 KB	Output is correct
94	Correct	38 ms	16844 KB	Output is correct
95	Correct	153 ms	22804 KB	Output is correct
96	Correct	123 ms	21160 KB	Output is correct
97	Correct	127 ms	20936 KB	Output is correct
98	Correct	120 ms	20936 KB	Output is correct
99	Correct	57 ms	20936 KB	Output is correct
100	Correct	61 ms	20932 KB	Output is correct
101	Correct	41 ms	17332 KB	Output is correct
102	Correct	37 ms	17252 KB	Output is correct
103	Correct	44 ms	16844 KB	Output is correct
104	Correct	39 ms	16844 KB	Output is correct
105	Correct	137 ms	22820 KB	Output is correct
106	Correct	145 ms	22840 KB	Output is correct
107	Correct	158 ms	27644 KB	Output is correct
108	Correct	137 ms	27836 KB	Output is correct
109	Correct	73 ms	20120 KB	Output is correct
110	Correct	72 ms	20116 KB	Output is correct
111	Correct	80 ms	18684 KB	Output is correct
112	Correct	91 ms	18664 KB	Output is correct

답안 #1095703

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