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답안 #1004512

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1004512 2024-06-21T09:32:26 Z victor_gao Construction Project 2 (JOI24_ho_t2) C++17
100 / 100
 145 ms 29436 KB 
//#pragma GCC optimize("Ofast,unroll-loops,O3")
//#pragma GCC target("avx,avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,fma,tune=native")
#include <bits/stdc++.h>
#define int long long
#define pii pair<int, int>
#define x first
#define y second
#define N 200015
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int n, m, s, t, l, k, ans = 0;
vector<pii> G[N];
vector<int> dijkstra(int st){
    priority_queue<pii, vector<pii>, greater<pii> > pq;
    vector<int> dis;
    dis.resize(n + 1, 1e18);
    dis[st] = 0; 
    pq.push({dis[st], st});
    while (!pq.empty()){
        pii now = pq.top(); pq.pop();
        if (now.x != dis[now.y])
            continue;
        for (auto [i, c] : G[now.y]){
            if (dis[i] > now.x + c){
                dis[i] = now.x + c;
                pq.push({dis[i], i});
            }
        }
    }
    return dis;
}
signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin >> n >> m >> s >> t >> l >> k;
    for (int i = 1; i <= m; i++){
        int a, b, c;
        cin >> a >> b >> c;
        G[a].push_back({b, c});
        G[b].push_back({a, c});
    }
    vector<int> dis1 = dijkstra(s);
    vector<int> dis2 = dijkstra(t);
    vector<int> dis3 = dis2;
    if (dis1[t] <= k){
        cout << n * (n - 1) / 2 << '\n';
        return 0;
    }
    sort(dis2.begin(), dis2.end());
    for (int i = 1; i <= n; i++){
        int need = k - dis1[i] - l;
        int can = upper_bound(dis2.begin(), dis2.end(), need) - dis2.begin();
        ans += can;
        if (dis3[i] <= need)
            ans--;
    }
    cout << ans << '\n';
}

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 3 ms 5212 KB Output is correct
6 Correct 3 ms 5464 KB Output is correct
7 Correct 59 ms 21404 KB Output is correct
8 Correct 64 ms 21344 KB Output is correct
9 Correct 60 ms 22052 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 3 ms 5172 KB Output is correct
13 Correct 3 ms 5212 KB Output is correct
14 Correct 47 ms 16600 KB Output is correct
15 Correct 121 ms 23188 KB Output is correct
16 Correct 2 ms 4956 KB Output is correct
17 Correct 3 ms 5264 KB Output is correct
18 Correct 59 ms 21980 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 2 ms 4956 KB Output is correct
21 Correct 2 ms 5208 KB Output is correct
22 Correct 3 ms 5272 KB Output is correct
23 Correct 46 ms 16632 KB Output is correct
24 Correct 139 ms 23272 KB Output is correct
25 Correct 2 ms 5164 KB Output is correct
26 Correct 4 ms 5468 KB Output is correct
27 Correct 76 ms 27744 KB Output is correct
28 Correct 54 ms 20416 KB Output is correct
29 Correct 70 ms 19348 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 3 ms 5164 KB Output is correct
4 Correct 3 ms 4952 KB Output is correct
5 Correct 2 ms 5160 KB Output is correct
6 Correct 2 ms 4952 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 2 ms 4952 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 2 ms 4952 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 2 ms 4956 KB Output is correct
15 Correct 3 ms 4956 KB Output is correct
16 Correct 2 ms 4956 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 2 ms 4956 KB Output is correct
21 Correct 2 ms 4956 KB Output is correct
22 Correct 2 ms 4952 KB Output is correct
23 Correct 2 ms 4956 KB Output is correct
24 Correct 2 ms 4956 KB Output is correct
25 Correct 2 ms 5164 KB Output is correct
26 Correct 2 ms 4956 KB Output is correct
27 Correct 2 ms 4956 KB Output is correct
28 Correct 2 ms 4956 KB Output is correct
29 Correct 2 ms 4956 KB Output is correct
30 Correct 2 ms 4956 KB Output is correct
31 Correct 2 ms 4956 KB Output is correct
32 Correct 2 ms 4956 KB Output is correct

Subtask #3
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 3 ms 5164 KB Output is correct
4 Correct 3 ms 4952 KB Output is correct
5 Correct 2 ms 5160 KB Output is correct
6 Correct 2 ms 4952 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 2 ms 4952 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 2 ms 4952 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 2 ms 4956 KB Output is correct
15 Correct 3 ms 4956 KB Output is correct
16 Correct 2 ms 4956 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 2 ms 4956 KB Output is correct
21 Correct 2 ms 4956 KB Output is correct
22 Correct 2 ms 4952 KB Output is correct
23 Correct 2 ms 4956 KB Output is correct
24 Correct 2 ms 4956 KB Output is correct
25 Correct 2 ms 5164 KB Output is correct
26 Correct 2 ms 4956 KB Output is correct
27 Correct 2 ms 4956 KB Output is correct
28 Correct 2 ms 4956 KB Output is correct
29 Correct 2 ms 4956 KB Output is correct
30 Correct 2 ms 4956 KB Output is correct
31 Correct 2 ms 4956 KB Output is correct
32 Correct 2 ms 4956 KB Output is correct
33 Correct 3 ms 5212 KB Output is correct
34 Correct 3 ms 5432 KB Output is correct
35 Correct 3 ms 5212 KB Output is correct
36 Correct 3 ms 5212 KB Output is correct
37 Correct 3 ms 5212 KB Output is correct
38 Correct 3 ms 5168 KB Output is correct
39 Correct 3 ms 5212 KB Output is correct
40 Correct 3 ms 5468 KB Output is correct
41 Correct 3 ms 5180 KB Output is correct
42 Correct 3 ms 5240 KB Output is correct
43 Correct 4 ms 5212 KB Output is correct
44 Correct 4 ms 5212 KB Output is correct
45 Correct 4 ms 5468 KB Output is correct
46 Correct 4 ms 5468 KB Output is correct
47 Correct 3 ms 5212 KB Output is correct
48 Correct 3 ms 5212 KB Output is correct
49 Correct 3 ms 5168 KB Output is correct
50 Correct 3 ms 5212 KB Output is correct
51 Correct 3 ms 5288 KB Output is correct
52 Correct 4 ms 5212 KB Output is correct
53 Correct 4 ms 5504 KB Output is correct
54 Correct 4 ms 5436 KB Output is correct
55 Correct 3 ms 5168 KB Output is correct
56 Correct 3 ms 5212 KB Output is correct
57 Correct 3 ms 5212 KB Output is correct
58 Correct 3 ms 5212 KB Output is correct

Subtask #4
47.0 / 47.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 3 ms 5212 KB Output is correct
6 Correct 3 ms 5464 KB Output is correct
7 Correct 59 ms 21404 KB Output is correct
8 Correct 64 ms 21344 KB Output is correct
9 Correct 60 ms 22052 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 3 ms 5172 KB Output is correct
13 Correct 3 ms 5212 KB Output is correct
14 Correct 47 ms 16600 KB Output is correct
15 Correct 121 ms 23188 KB Output is correct
16 Correct 2 ms 4956 KB Output is correct
17 Correct 3 ms 5264 KB Output is correct
18 Correct 59 ms 21980 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 2 ms 4956 KB Output is correct
21 Correct 2 ms 5208 KB Output is correct
22 Correct 3 ms 5272 KB Output is correct
23 Correct 46 ms 16632 KB Output is correct
24 Correct 139 ms 23272 KB Output is correct
25 Correct 2 ms 5164 KB Output is correct
26 Correct 4 ms 5468 KB Output is correct
27 Correct 76 ms 27744 KB Output is correct
28 Correct 54 ms 20416 KB Output is correct
29 Correct 70 ms 19348 KB Output is correct
30 Correct 2 ms 4952 KB Output is correct
31 Correct 2 ms 4956 KB Output is correct
32 Correct 3 ms 5164 KB Output is correct
33 Correct 3 ms 4952 KB Output is correct
34 Correct 2 ms 5160 KB Output is correct
35 Correct 2 ms 4952 KB Output is correct
36 Correct 2 ms 4956 KB Output is correct
37 Correct 2 ms 4952 KB Output is correct
38 Correct 2 ms 4956 KB Output is correct
39 Correct 2 ms 4956 KB Output is correct
40 Correct 2 ms 4956 KB Output is correct
41 Correct 2 ms 4952 KB Output is correct
42 Correct 2 ms 4956 KB Output is correct
43 Correct 2 ms 4956 KB Output is correct
44 Correct 3 ms 4956 KB Output is correct
45 Correct 2 ms 4956 KB Output is correct
46 Correct 2 ms 4956 KB Output is correct
47 Correct 2 ms 4956 KB Output is correct
48 Correct 2 ms 4956 KB Output is correct
49 Correct 2 ms 4956 KB Output is correct
50 Correct 2 ms 4956 KB Output is correct
51 Correct 2 ms 4952 KB Output is correct
52 Correct 2 ms 4956 KB Output is correct
53 Correct 2 ms 4956 KB Output is correct
54 Correct 2 ms 5164 KB Output is correct
55 Correct 2 ms 4956 KB Output is correct
56 Correct 2 ms 4956 KB Output is correct
57 Correct 2 ms 4956 KB Output is correct
58 Correct 2 ms 4956 KB Output is correct
59 Correct 2 ms 4956 KB Output is correct
60 Correct 2 ms 4956 KB Output is correct
61 Correct 2 ms 4956 KB Output is correct
62 Correct 3 ms 5212 KB Output is correct
63 Correct 3 ms 5432 KB Output is correct
64 Correct 3 ms 5212 KB Output is correct
65 Correct 3 ms 5212 KB Output is correct
66 Correct 3 ms 5212 KB Output is correct
67 Correct 3 ms 5168 KB Output is correct
68 Correct 3 ms 5212 KB Output is correct
69 Correct 3 ms 5468 KB Output is correct
70 Correct 3 ms 5180 KB Output is correct
71 Correct 3 ms 5240 KB Output is correct
72 Correct 4 ms 5212 KB Output is correct
73 Correct 4 ms 5212 KB Output is correct
74 Correct 4 ms 5468 KB Output is correct
75 Correct 4 ms 5468 KB Output is correct
76 Correct 3 ms 5212 KB Output is correct
77 Correct 3 ms 5212 KB Output is correct
78 Correct 3 ms 5168 KB Output is correct
79 Correct 3 ms 5212 KB Output is correct
80 Correct 3 ms 5288 KB Output is correct
81 Correct 4 ms 5212 KB Output is correct
82 Correct 4 ms 5504 KB Output is correct
83 Correct 4 ms 5436 KB Output is correct
84 Correct 3 ms 5168 KB Output is correct
85 Correct 3 ms 5212 KB Output is correct
86 Correct 3 ms 5212 KB Output is correct
87 Correct 3 ms 5212 KB Output is correct
88 Correct 90 ms 24840 KB Output is correct
89 Correct 84 ms 24848 KB Output is correct
90 Correct 92 ms 24872 KB Output is correct
91 Correct 44 ms 18780 KB Output is correct
92 Correct 38 ms 18772 KB Output is correct
93 Correct 41 ms 17236 KB Output is correct
94 Correct 44 ms 17232 KB Output is correct
95 Correct 139 ms 24880 KB Output is correct
96 Correct 127 ms 24880 KB Output is correct
97 Correct 136 ms 24600 KB Output is correct
98 Correct 137 ms 24916 KB Output is correct
99 Correct 72 ms 23632 KB Output is correct
100 Correct 63 ms 23632 KB Output is correct
101 Correct 41 ms 18928 KB Output is correct
102 Correct 39 ms 18768 KB Output is correct
103 Correct 43 ms 17236 KB Output is correct
104 Correct 40 ms 17244 KB Output is correct
105 Correct 145 ms 24852 KB Output is correct
106 Correct 136 ms 24752 KB Output is correct
107 Correct 127 ms 29176 KB Output is correct
108 Correct 134 ms 29436 KB Output is correct
109 Correct 69 ms 21588 KB Output is correct
110 Correct 70 ms 21584 KB Output is correct
111 Correct 83 ms 19708 KB Output is correct
112 Correct 81 ms 19560 KB Output is correct