oj.uz

답안 #997039

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
997039 2024-06-11T15:54:48 Z VMaksimoski008 Construction Project 2 (JOI24_ho_t2) C++17
100 / 100
 150 ms 25144 KB 
#include <bits/stdc++.h>
#define int long long

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

int32_t main() {
    ios_base::sync_with_stdio(false);
    cout.tie(0); cin.tie(0);

    int n, m, s, t, L, k, ans = 0;
    cin >> n >> m >> s >> t >> L >> k;

    vector<pii> graph[n+1];
    for(int i=0; i<m; i++) {
        int a, b, w;
        cin >> a >> b >> w;
        graph[a].push_back({ b, w });
        graph[b].push_back({ a, w });
    }

    auto dijkstra = [&](int start) {
        vector<bool> vis(n+1);
        vector<ll> dist(n+1, 1e18);
        priority_queue<pll, vector<pll>, greater<pll> > pq;

        dist[start] = 0;
        pq.push({ 0, start });

        while(!pq.empty()) {
            int u = pq.top().second; pq.pop();

            if(vis[u]) continue;
            vis[u] = 1;

            for(auto &[v, w] : graph[u]) {
                if(dist[v] > dist[u] + w) {
                    dist[v] = dist[u] + w;
                    pq.push({ dist[v], v });
                }
            }
        }

        return dist;
    };

    vector<ll> D1 = dijkstra(s);
    vector<ll> D2 = dijkstra(t);

    if(D1[t] <= k) {
        cout << 1ll * n * (n - 1) / 2 << '\n';
        return 0;
    }

    vector<pll> D;
    for(int i=1; i<=n; i++) D.push_back({ D2[i], D1[i] });
    sort(D.begin(), D.end());

    for(int i=1; i<n; i++) {
        int l=0, r=i-1, p=-1;
        while(l <= r) {
            int mid = (l + r) / 2;
            if(D[i].second + L + D[mid].first <= k) p = mid, l = mid + 1;
            else r = mid - 1;
        }

        ans += p + 1;
    }

    cout << ans << '\n';
    return 0;
}

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 1 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 57 ms 23180 KB Output is correct
8 Correct 69 ms 22624 KB Output is correct
9 Correct 59 ms 19764 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 600 KB Output is correct
14 Correct 44 ms 19672 KB Output is correct
15 Correct 126 ms 24344 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 64 ms 23696 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 40 ms 19148 KB Output is correct
24 Correct 122 ms 23836 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 71 ms 24740 KB Output is correct
28 Correct 55 ms 16336 KB Output is correct
29 Correct 54 ms 18908 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 348 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 1 ms 348 KB Output is correct
11 Correct 0 ms 348 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 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 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 348 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 0 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 348 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 1 ms 348 KB Output is correct
11 Correct 0 ms 348 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 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 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 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 1 ms 604 KB Output is correct
34 Correct 1 ms 604 KB Output is correct
35 Correct 1 ms 604 KB Output is correct
36 Correct 3 ms 604 KB Output is correct
37 Correct 1 ms 604 KB Output is correct
38 Correct 1 ms 604 KB Output is correct
39 Correct 1 ms 604 KB Output is correct
40 Correct 1 ms 604 KB Output is correct
41 Correct 1 ms 604 KB Output is correct
42 Correct 1 ms 604 KB Output is correct
43 Correct 2 ms 728 KB Output is correct
44 Correct 2 ms 604 KB Output is correct
45 Correct 1 ms 860 KB Output is correct
46 Correct 2 ms 860 KB Output is correct
47 Correct 1 ms 604 KB Output is correct
48 Correct 1 ms 604 KB Output is correct
49 Correct 1 ms 604 KB Output is correct
50 Correct 1 ms 604 KB Output is correct
51 Correct 2 ms 604 KB Output is correct
52 Correct 1 ms 604 KB Output is correct
53 Correct 2 ms 604 KB Output is correct
54 Correct 2 ms 604 KB Output is correct
55 Correct 1 ms 600 KB Output is correct
56 Correct 1 ms 604 KB Output is correct
57 Correct 1 ms 604 KB Output is correct
58 Correct 1 ms 604 KB Output is correct

Subtask #4
47.0 / 47.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 1 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 57 ms 23180 KB Output is correct
8 Correct 69 ms 22624 KB Output is correct
9 Correct 59 ms 19764 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 600 KB Output is correct
14 Correct 44 ms 19672 KB Output is correct
15 Correct 126 ms 24344 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 64 ms 23696 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 40 ms 19148 KB Output is correct
24 Correct 122 ms 23836 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 71 ms 24740 KB Output is correct
28 Correct 55 ms 16336 KB Output is correct
29 Correct 54 ms 18908 KB Output is correct
30 Correct 0 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 348 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 1 ms 348 KB Output is correct
40 Correct 0 ms 348 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 0 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 344 KB Output is correct
53 Correct 1 ms 348 KB Output is correct
54 Correct 0 ms 348 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 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 0 ms 348 KB Output is correct
62 Correct 1 ms 604 KB Output is correct
63 Correct 1 ms 604 KB Output is correct
64 Correct 1 ms 604 KB Output is correct
65 Correct 3 ms 604 KB Output is correct
66 Correct 1 ms 604 KB Output is correct
67 Correct 1 ms 604 KB Output is correct
68 Correct 1 ms 604 KB Output is correct
69 Correct 1 ms 604 KB Output is correct
70 Correct 1 ms 604 KB Output is correct
71 Correct 1 ms 604 KB Output is correct
72 Correct 2 ms 728 KB Output is correct
73 Correct 2 ms 604 KB Output is correct
74 Correct 1 ms 860 KB Output is correct
75 Correct 2 ms 860 KB Output is correct
76 Correct 1 ms 604 KB Output is correct
77 Correct 1 ms 604 KB Output is correct
78 Correct 1 ms 604 KB Output is correct
79 Correct 1 ms 604 KB Output is correct
80 Correct 2 ms 604 KB Output is correct
81 Correct 1 ms 604 KB Output is correct
82 Correct 2 ms 604 KB Output is correct
83 Correct 2 ms 604 KB Output is correct
84 Correct 1 ms 600 KB Output is correct
85 Correct 1 ms 604 KB Output is correct
86 Correct 1 ms 604 KB Output is correct
87 Correct 1 ms 604 KB Output is correct
88 Correct 82 ms 18992 KB Output is correct
89 Correct 78 ms 18992 KB Output is correct
90 Correct 96 ms 24104 KB Output is correct
91 Correct 37 ms 10832 KB Output is correct
92 Correct 36 ms 10836 KB Output is correct
93 Correct 46 ms 19140 KB Output is correct
94 Correct 49 ms 18176 KB Output is correct
95 Correct 150 ms 24132 KB Output is correct
96 Correct 129 ms 20164 KB Output is correct
97 Correct 135 ms 22996 KB Output is correct
98 Correct 121 ms 23272 KB Output is correct
99 Correct 67 ms 21948 KB Output is correct
100 Correct 67 ms 21976 KB Output is correct
101 Correct 35 ms 10580 KB Output is correct
102 Correct 35 ms 10764 KB Output is correct
103 Correct 46 ms 18624 KB Output is correct
104 Correct 45 ms 17692 KB Output is correct
105 Correct 145 ms 22980 KB Output is correct
106 Correct 144 ms 24576 KB Output is correct
107 Correct 132 ms 25144 KB Output is correct
108 Correct 138 ms 24892 KB Output is correct
109 Correct 70 ms 15840 KB Output is correct
110 Correct 76 ms 15744 KB Output is correct
111 Correct 86 ms 19972 KB Output is correct
112 Correct 86 ms 18652 KB Output is correct