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답안 #1112284

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1112284 2024-11-14T02:41:53 Z Zero_OP Construction Project 2 (JOI24_ho_t2) C++14
53 / 100
 2000 ms 28460 KB 
#include <bits/stdc++.h>

using namespace std;

const long long inf = 1e18;

void testcase(){
    int N, M, S, T, L; long long K;
    cin >> N >> M >> S >> T >> L >> K;

    --S, --T;
    vector<vector<pair<int, int>>> adj(N);
    while(M--){
        int u, v, w;
        cin >> u >> v >> w;
        --u, --v;
        adj[u].emplace_back(v, w);
        adj[v].emplace_back(u, w);
    }

    auto dijkstra = [&](int s){
        vector<long long> d(N, inf);
        d[s] = 0;

        using node = pair<long long, int>;
        priority_queue<node, vector<node>, greater<node>> pq;
        pq.push({d[s], s});

        while(!pq.empty()){
            long long cur; int u;
            tie(cur, u) = pq.top(); pq.pop();
            for(auto [v, w] : adj[u]){
                if(d[v] > d[u] + w){
                    d[v] = d[u] + w;
                    pq.push({d[v], v});
                }
            }
        }
        return d;
    };

    vector<long long> dS = dijkstra(S), dT = dijkstra(T);

    if(dS[T] <= K){
        cout << 1LL * N * (N - 1) / 2;
        return;
    }

    vector<long long> vS, vT;
    for(int i = 0; i < N; ++i){
        vS.emplace_back(dS[i]);
        vT.emplace_back(dT[i]);
    }

    sort(vS.begin(), vS.end());
    sort(vT.begin(), vT.end());

    long long cnt = 0;
    for(int i = 0; i < N; ++i){
        cnt += upper_bound(vS.begin(), vS.end(), K - L - dT[i]) - vS.begin();
        cnt += upper_bound(vT.begin(), vT.end(), K - L - dS[i]) - vT.begin();
    }

    assert(cnt & 1 ^ 1);
    cout << cnt / 2 << '\n';
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int T = 1;
//    cin >> T;
    while(T--) testcase();

    return 0;
}

Compilation message

Main.cpp: In lambda function:
Main.cpp:32:22: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   32 |             for(auto [v, w] : adj[u]){
      |                      ^
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from Main.cpp:1:
Main.cpp: In function 'void testcase()':
Main.cpp:64:16: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   64 |     assert(cnt & 1 ^ 1);
      |            ~~~~^~~

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 2 ms 592 KB Output is correct
7 Correct 62 ms 19528 KB Output is correct
8 Correct 80 ms 21796 KB Output is correct
9 Correct 64 ms 20664 KB Output is correct
10 Correct 1 ms 504 KB Output is correct
11 Correct 1 ms 456 KB Output is correct
12 Correct 2 ms 724 KB Output is correct
13 Correct 2 ms 592 KB Output is correct
14 Correct 41 ms 19312 KB Output is correct
15 Correct 142 ms 23472 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 2 ms 592 KB Output is correct
18 Correct 86 ms 22708 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 592 KB Output is correct
22 Correct 3 ms 592 KB Output is correct
23 Correct 47 ms 19128 KB Output is correct
24 Correct 154 ms 23476 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 2 ms 1016 KB Output is correct
27 Correct 87 ms 26672 KB Output is correct
28 Correct 65 ms 14948 KB Output is correct
29 Correct 83 ms 18728 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 504 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 516 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 504 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 504 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 1 ms 508 KB Output is correct
29 Correct 1 ms 504 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Correct 1 ms 336 KB Output is correct

Subtask #3
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 504 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 516 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 504 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 504 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 1 ms 508 KB Output is correct
29 Correct 1 ms 504 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 2 ms 592 KB Output is correct
34 Correct 2 ms 592 KB Output is correct
35 Correct 1 ms 592 KB Output is correct
36 Correct 2 ms 592 KB Output is correct
37 Correct 2 ms 592 KB Output is correct
38 Correct 2 ms 592 KB Output is correct
39 Correct 2 ms 592 KB Output is correct
40 Correct 2 ms 592 KB Output is correct
41 Correct 2 ms 504 KB Output is correct
42 Correct 1 ms 592 KB Output is correct
43 Correct 2 ms 592 KB Output is correct
44 Correct 2 ms 592 KB Output is correct
45 Correct 2 ms 592 KB Output is correct
46 Correct 3 ms 592 KB Output is correct
47 Correct 2 ms 592 KB Output is correct
48 Correct 2 ms 592 KB Output is correct
49 Correct 1 ms 336 KB Output is correct
50 Correct 1 ms 592 KB Output is correct
51 Correct 2 ms 760 KB Output is correct
52 Correct 2 ms 592 KB Output is correct
53 Correct 2 ms 592 KB Output is correct
54 Correct 2 ms 592 KB Output is correct
55 Correct 4 ms 592 KB Output is correct
56 Correct 3 ms 592 KB Output is correct
57 Correct 3 ms 760 KB Output is correct
58 Correct 2 ms 592 KB Output is correct

Subtask #4
0.0 / 47.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 2 ms 592 KB Output is correct
7 Correct 62 ms 19528 KB Output is correct
8 Correct 80 ms 21796 KB Output is correct
9 Correct 64 ms 20664 KB Output is correct
10 Correct 1 ms 504 KB Output is correct
11 Correct 1 ms 456 KB Output is correct
12 Correct 2 ms 724 KB Output is correct
13 Correct 2 ms 592 KB Output is correct
14 Correct 41 ms 19312 KB Output is correct
15 Correct 142 ms 23472 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 2 ms 592 KB Output is correct
18 Correct 86 ms 22708 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 592 KB Output is correct
22 Correct 3 ms 592 KB Output is correct
23 Correct 47 ms 19128 KB Output is correct
24 Correct 154 ms 23476 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 2 ms 1016 KB Output is correct
27 Correct 87 ms 26672 KB Output is correct
28 Correct 65 ms 14948 KB Output is correct
29 Correct 83 ms 18728 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 504 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 1 ms 336 KB Output is correct
36 Correct 1 ms 336 KB Output is correct
37 Correct 1 ms 516 KB Output is correct
38 Correct 1 ms 336 KB Output is correct
39 Correct 1 ms 336 KB Output is correct
40 Correct 1 ms 336 KB Output is correct
41 Correct 1 ms 336 KB Output is correct
42 Correct 1 ms 336 KB Output is correct
43 Correct 1 ms 336 KB Output is correct
44 Correct 1 ms 504 KB Output is correct
45 Correct 1 ms 336 KB Output is correct
46 Correct 1 ms 336 KB Output is correct
47 Correct 1 ms 336 KB Output is correct
48 Correct 1 ms 336 KB Output is correct
49 Correct 1 ms 336 KB Output is correct
50 Correct 1 ms 336 KB Output is correct
51 Correct 1 ms 504 KB Output is correct
52 Correct 1 ms 336 KB Output is correct
53 Correct 1 ms 336 KB Output is correct
54 Correct 1 ms 336 KB Output is correct
55 Correct 1 ms 336 KB Output is correct
56 Correct 1 ms 336 KB Output is correct
57 Correct 1 ms 508 KB Output is correct
58 Correct 1 ms 504 KB Output is correct
59 Correct 1 ms 336 KB Output is correct
60 Correct 1 ms 336 KB Output is correct
61 Correct 1 ms 336 KB Output is correct
62 Correct 2 ms 592 KB Output is correct
63 Correct 2 ms 592 KB Output is correct
64 Correct 1 ms 592 KB Output is correct
65 Correct 2 ms 592 KB Output is correct
66 Correct 2 ms 592 KB Output is correct
67 Correct 2 ms 592 KB Output is correct
68 Correct 2 ms 592 KB Output is correct
69 Correct 2 ms 592 KB Output is correct
70 Correct 2 ms 504 KB Output is correct
71 Correct 1 ms 592 KB Output is correct
72 Correct 2 ms 592 KB Output is correct
73 Correct 2 ms 592 KB Output is correct
74 Correct 2 ms 592 KB Output is correct
75 Correct 3 ms 592 KB Output is correct
76 Correct 2 ms 592 KB Output is correct
77 Correct 2 ms 592 KB Output is correct
78 Correct 1 ms 336 KB Output is correct
79 Correct 1 ms 592 KB Output is correct
80 Correct 2 ms 760 KB Output is correct
81 Correct 2 ms 592 KB Output is correct
82 Correct 2 ms 592 KB Output is correct
83 Correct 2 ms 592 KB Output is correct
84 Correct 4 ms 592 KB Output is correct
85 Correct 3 ms 592 KB Output is correct
86 Correct 3 ms 760 KB Output is correct
87 Correct 2 ms 592 KB Output is correct
88 Correct 106 ms 20264 KB Output is correct
89 Correct 104 ms 20144 KB Output is correct
90 Correct 106 ms 25892 KB Output is correct
91 Correct 44 ms 9544 KB Output is correct
92 Correct 55 ms 9544 KB Output is correct
93 Correct 65 ms 19888 KB Output is correct
94 Correct 48 ms 19896 KB Output is correct
95 Correct 203 ms 25220 KB Output is correct
96 Correct 140 ms 21320 KB Output is correct
97 Correct 178 ms 24128 KB Output is correct
98 Correct 151 ms 24160 KB Output is correct
99 Correct 76 ms 24044 KB Output is correct
100 Correct 91 ms 24264 KB Output is correct
101 Correct 41 ms 9552 KB Output is correct
102 Correct 41 ms 9536 KB Output is correct
103 Correct 48 ms 19896 KB Output is correct
104 Correct 49 ms 20072 KB Output is correct
105 Correct 163 ms 25040 KB Output is correct
106 Correct 154 ms 25136 KB Output is correct
107 Correct 184 ms 27956 KB Output is correct
108 Correct 155 ms 28460 KB Output is correct
109 Execution timed out 2060 ms 15024 KB Time limit exceeded
110 Halted 0 ms 0 KB -