답안 #991210

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
991210	2024-06-01T15:09:20 Z	model_code	Construction Project 2 (JOI24_ho_t2)	C++17	100 / 100	307 ms	23764 KB

Main

#include <iostream>
#include <vector>
#include <queue>
#include <algorithm>
using namespace std;

using P = pair<long long, int>;

struct edge{
    int to;
    long long cost;
};

constexpr long long inf = 1e18;

int main(){
    int n, m;
    cin >> n >> m;
    
    int s, t;
    long long l, k;
    cin >> s >> t >> l >> k;
    s--;
    t--;

    vector<vector<edge>> g(n);
    for(int i = 0; i < m; i++){
        int a, b;
        long long c;
        cin >> a >> b >> c;
        a--;
        b--;

        g[a].push_back({b, c});
        g[b].push_back({a, c});
    }

    priority_queue<P, vector<P>, greater<P>> que;
    vector<long long> dist_from_s(n, inf), dist_from_t(n, inf);

    dist_from_s[s] = 0;
    que.push({0, s});
    while(!que.empty()){
        auto [dist, now] = que.top();
        que.pop();

        if(dist_from_s[now] < dist){
            continue;
        }

        for(auto [nxt, c]: g[now]){
            if(dist_from_s[nxt] > dist + c){
                dist_from_s[nxt] = dist + c;
                que.push({dist + c, nxt});
            }
        }
    }

    dist_from_t[t] = 0;
    que.push({0, t});
    while(!que.empty()){
        auto [dist, now] = que.top();
        que.pop();

        if(dist_from_t[now] < dist){
            continue;
        }

        for(auto [nxt, c]: g[now]){
            if(dist_from_t[nxt] > dist + c){
                dist_from_t[nxt] = dist + c;
                que.push({dist + c, nxt});
            }
        }
    }

    if(dist_from_s[t] <= k){
        cout << (long long)(n) * (n - 1) / 2 << endl;
        return 0;
    }

    long long ans = 0;
    sort(dist_from_t.begin(), dist_from_t.end());

    for(int u = 0; u < n; u++){
        long long ok = k - l - dist_from_s[u];
        ans += lower_bound(dist_from_t.begin(), dist_from_t.end(), ok + 1) - dist_from_t.begin();
    }

    cout << ans << endl;
}

Subtask #1
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	2 ms	604 KB	Output is correct
6	Correct	2 ms	604 KB	Output is correct
7	Correct	94 ms	18776 KB	Output is correct
8	Correct	115 ms	18740 KB	Output is correct
9	Correct	103 ms	18740 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	604 KB	Output is correct
13	Correct	2 ms	732 KB	Output is correct
14	Correct	61 ms	13400 KB	Output is correct
15	Correct	190 ms	19148 KB	Output is correct
16	Correct	0 ms	344 KB	Output is correct
17	Correct	2 ms	604 KB	Output is correct
18	Correct	136 ms	17536 KB	Output is correct
19	Correct	0 ms	344 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	1 ms	604 KB	Output is correct
22	Correct	2 ms	604 KB	Output is correct
23	Correct	62 ms	13444 KB	Output is correct
24	Correct	177 ms	19236 KB	Output is correct
25	Correct	0 ms	348 KB	Output is correct
26	Correct	2 ms	604 KB	Output is correct
27	Correct	128 ms	23668 KB	Output is correct
28	Correct	101 ms	15052 KB	Output is correct
29	Correct	105 ms	13904 KB	Output is correct

Subtask #2
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	344 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	432 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	0 ms	344 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	0 ms	344 KB	Output is correct
24	Correct	0 ms	344 KB	Output is correct
25	Correct	0 ms	360 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	0 ms	344 KB	Output is correct
31	Correct	0 ms	348 KB	Output is correct
32	Correct	0 ms	348 KB	Output is correct

Subtask #3
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	344 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	432 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	0 ms	344 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	0 ms	344 KB	Output is correct
24	Correct	0 ms	344 KB	Output is correct
25	Correct	0 ms	360 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	0 ms	344 KB	Output is correct
31	Correct	0 ms	348 KB	Output is correct
32	Correct	0 ms	348 KB	Output is correct
33	Correct	2 ms	856 KB	Output is correct
34	Correct	2 ms	604 KB	Output is correct
35	Correct	1 ms	604 KB	Output is correct
36	Correct	2 ms	604 KB	Output is correct
37	Correct	2 ms	600 KB	Output is correct
38	Correct	1 ms	604 KB	Output is correct
39	Correct	2 ms	604 KB	Output is correct
40	Correct	2 ms	604 KB	Output is correct
41	Correct	2 ms	628 KB	Output is correct
42	Correct	1 ms	604 KB	Output is correct
43	Correct	3 ms	604 KB	Output is correct
44	Correct	3 ms	592 KB	Output is correct
45	Correct	3 ms	588 KB	Output is correct
46	Correct	3 ms	600 KB	Output is correct
47	Correct	2 ms	604 KB	Output is correct
48	Correct	2 ms	856 KB	Output is correct
49	Correct	3 ms	604 KB	Output is correct
50	Correct	1 ms	432 KB	Output is correct
51	Correct	3 ms	604 KB	Output is correct
52	Correct	3 ms	604 KB	Output is correct
53	Correct	3 ms	604 KB	Output is correct
54	Correct	4 ms	604 KB	Output is correct
55	Correct	2 ms	604 KB	Output is correct
56	Correct	2 ms	604 KB	Output is correct
57	Correct	3 ms	604 KB	Output is correct
58	Correct	3 ms	604 KB	Output is correct

Subtask #4
47.0 / 47.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	2 ms	604 KB	Output is correct
6	Correct	2 ms	604 KB	Output is correct
7	Correct	94 ms	18776 KB	Output is correct
8	Correct	115 ms	18740 KB	Output is correct
9	Correct	103 ms	18740 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	604 KB	Output is correct
13	Correct	2 ms	732 KB	Output is correct
14	Correct	61 ms	13400 KB	Output is correct
15	Correct	190 ms	19148 KB	Output is correct
16	Correct	0 ms	344 KB	Output is correct
17	Correct	2 ms	604 KB	Output is correct
18	Correct	136 ms	17536 KB	Output is correct
19	Correct	0 ms	344 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	1 ms	604 KB	Output is correct
22	Correct	2 ms	604 KB	Output is correct
23	Correct	62 ms	13444 KB	Output is correct
24	Correct	177 ms	19236 KB	Output is correct
25	Correct	0 ms	348 KB	Output is correct
26	Correct	2 ms	604 KB	Output is correct
27	Correct	128 ms	23668 KB	Output is correct
28	Correct	101 ms	15052 KB	Output is correct
29	Correct	105 ms	13904 KB	Output is correct
30	Correct	1 ms	348 KB	Output is correct
31	Correct	0 ms	348 KB	Output is correct
32	Correct	0 ms	348 KB	Output is correct
33	Correct	0 ms	348 KB	Output is correct
34	Correct	0 ms	344 KB	Output is correct
35	Correct	0 ms	348 KB	Output is correct
36	Correct	0 ms	348 KB	Output is correct
37	Correct	0 ms	348 KB	Output is correct
38	Correct	0 ms	348 KB	Output is correct
39	Correct	0 ms	348 KB	Output is correct
40	Correct	0 ms	344 KB	Output is correct
41	Correct	0 ms	348 KB	Output is correct
42	Correct	0 ms	348 KB	Output is correct
43	Correct	0 ms	348 KB	Output is correct
44	Correct	0 ms	348 KB	Output is correct
45	Correct	1 ms	348 KB	Output is correct
46	Correct	0 ms	348 KB	Output is correct
47	Correct	0 ms	432 KB	Output is correct
48	Correct	0 ms	348 KB	Output is correct
49	Correct	1 ms	348 KB	Output is correct
50	Correct	0 ms	344 KB	Output is correct
51	Correct	0 ms	348 KB	Output is correct
52	Correct	0 ms	344 KB	Output is correct
53	Correct	0 ms	344 KB	Output is correct
54	Correct	0 ms	360 KB	Output is correct
55	Correct	0 ms	348 KB	Output is correct
56	Correct	0 ms	348 KB	Output is correct
57	Correct	0 ms	348 KB	Output is correct
58	Correct	0 ms	348 KB	Output is correct
59	Correct	0 ms	344 KB	Output is correct
60	Correct	0 ms	348 KB	Output is correct
61	Correct	0 ms	348 KB	Output is correct
62	Correct	2 ms	856 KB	Output is correct
63	Correct	2 ms	604 KB	Output is correct
64	Correct	1 ms	604 KB	Output is correct
65	Correct	2 ms	604 KB	Output is correct
66	Correct	2 ms	600 KB	Output is correct
67	Correct	1 ms	604 KB	Output is correct
68	Correct	2 ms	604 KB	Output is correct
69	Correct	2 ms	604 KB	Output is correct
70	Correct	2 ms	628 KB	Output is correct
71	Correct	1 ms	604 KB	Output is correct
72	Correct	3 ms	604 KB	Output is correct
73	Correct	3 ms	592 KB	Output is correct
74	Correct	3 ms	588 KB	Output is correct
75	Correct	3 ms	600 KB	Output is correct
76	Correct	2 ms	604 KB	Output is correct
77	Correct	2 ms	856 KB	Output is correct
78	Correct	3 ms	604 KB	Output is correct
79	Correct	1 ms	432 KB	Output is correct
80	Correct	3 ms	604 KB	Output is correct
81	Correct	3 ms	604 KB	Output is correct
82	Correct	3 ms	604 KB	Output is correct
83	Correct	4 ms	604 KB	Output is correct
84	Correct	2 ms	604 KB	Output is correct
85	Correct	2 ms	604 KB	Output is correct
86	Correct	3 ms	604 KB	Output is correct
87	Correct	3 ms	604 KB	Output is correct
88	Correct	171 ms	19024 KB	Output is correct
89	Correct	179 ms	19024 KB	Output is correct
90	Correct	202 ms	19028 KB	Output is correct
91	Correct	105 ms	11092 KB	Output is correct
92	Correct	101 ms	10708 KB	Output is correct
93	Correct	84 ms	13396 KB	Output is correct
94	Correct	77 ms	13396 KB	Output is correct
95	Correct	278 ms	19736 KB	Output is correct
96	Correct	300 ms	19760 KB	Output is correct
97	Correct	263 ms	18512 KB	Output is correct
98	Correct	262 ms	18700 KB	Output is correct
99	Correct	144 ms	17612 KB	Output is correct
100	Correct	176 ms	17492 KB	Output is correct
101	Correct	134 ms	11092 KB	Output is correct
102	Correct	118 ms	10624 KB	Output is correct
103	Correct	88 ms	13396 KB	Output is correct
104	Correct	87 ms	13388 KB	Output is correct
105	Correct	307 ms	19836 KB	Output is correct
106	Correct	283 ms	19724 KB	Output is correct
107	Correct	218 ms	23740 KB	Output is correct
108	Correct	241 ms	23764 KB	Output is correct
109	Correct	177 ms	15172 KB	Output is correct
110	Correct	139 ms	15012 KB	Output is correct
111	Correct	145 ms	14604 KB	Output is correct
112	Correct	230 ms	14516 KB	Output is correct

답안 #991210

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