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답안 #991144

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
991144 2024-06-01T12:12:57 Z gmroh06 날다람쥐 (JOI14_ho_t4) C++17
100 / 100
 100 ms 23504 KB 
#include <bits/stdc++.h>

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

inline void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
}

const ll INF = 1e18;

int main() {
    fastio();

    ll n, m, x;

    cin >> n >> m >> x;

    vector<ll> h(n);
    vector<vector<pll>> gr(n);

    for (auto& i : h) {
        cin >> i;
    }

    for (ll i = 0, a, b, c; i < m; i++) {
        cin >> a >> b >> c;

        if (h[a - 1] >= c) gr[a - 1].emplace_back(b - 1, c);
        if (h[b - 1] >= c) gr[b - 1].emplace_back(a - 1, c);
    }

    priority_queue<pll, vector<pll>, greater<pll>> pq;
    vector<ll> d(n, INF);

    pq.emplace(0, 0);
    d[0] = 0;

    while (!pq.empty()) {
        auto [dist, cur] = pq.top();
        pq.pop();

        if (dist > d[cur]) continue;

        ll c = max(0LL, x - d[cur]), tmp;

        for (auto& [nxt, cost] : gr[cur]) {
            if (cost < c - h[nxt]) {
                tmp = c - h[nxt];
            } else if (c - h[nxt] <= cost and cost <= c) {
                tmp = cost;
            } else {
                tmp = 2 * cost - c;
            }

            if (d[nxt] > d[cur] + tmp) {
                d[nxt] = d[cur] + tmp;
                pq.emplace(d[nxt], nxt);
            }
        }
    }

    ll ans = d.back() + h.back() + min(0LL, d.back() - x);

    cout << (ans < INF ? ans : -1);

    return 0;
}

Subtask #1
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 344 KB Output is correct

Subtask #2
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 91 ms 15148 KB Output is correct
2 Correct 79 ms 23504 KB Output is correct
3 Correct 60 ms 13772 KB Output is correct
4 Correct 90 ms 22404 KB Output is correct
5 Correct 82 ms 22132 KB Output is correct
6 Correct 3 ms 604 KB Output is correct
7 Correct 50 ms 9608 KB Output is correct
8 Correct 98 ms 20948 KB Output is correct
9 Correct 64 ms 10836 KB Output is correct
10 Correct 38 ms 8236 KB Output is correct
11 Correct 10 ms 2908 KB Output is correct
12 Correct 55 ms 12848 KB Output is correct
13 Correct 24 ms 10640 KB Output is correct
14 Correct 54 ms 10368 KB Output is correct
15 Correct 3 ms 1116 KB Output is correct
16 Correct 69 ms 21648 KB Output is correct
17 Correct 9 ms 2908 KB Output is correct
18 Correct 11 ms 3616 KB Output is correct
19 Correct 23 ms 4700 KB Output is correct
20 Correct 11 ms 3676 KB Output is correct

Subtask #3
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 91 ms 15148 KB Output is correct
22 Correct 79 ms 23504 KB Output is correct
23 Correct 60 ms 13772 KB Output is correct
24 Correct 90 ms 22404 KB Output is correct
25 Correct 82 ms 22132 KB Output is correct
26 Correct 3 ms 604 KB Output is correct
27 Correct 50 ms 9608 KB Output is correct
28 Correct 98 ms 20948 KB Output is correct
29 Correct 64 ms 10836 KB Output is correct
30 Correct 38 ms 8236 KB Output is correct
31 Correct 10 ms 2908 KB Output is correct
32 Correct 55 ms 12848 KB Output is correct
33 Correct 24 ms 10640 KB Output is correct
34 Correct 54 ms 10368 KB Output is correct
35 Correct 3 ms 1116 KB Output is correct
36 Correct 69 ms 21648 KB Output is correct
37 Correct 9 ms 2908 KB Output is correct
38 Correct 11 ms 3616 KB Output is correct
39 Correct 23 ms 4700 KB Output is correct
40 Correct 11 ms 3676 KB Output is correct
41 Correct 51 ms 7436 KB Output is correct
42 Correct 14 ms 5724 KB Output is correct
43 Correct 43 ms 6980 KB Output is correct
44 Correct 41 ms 10320 KB Output is correct
45 Correct 76 ms 21296 KB Output is correct
46 Correct 7 ms 5056 KB Output is correct
47 Correct 96 ms 20940 KB Output is correct
48 Correct 97 ms 21976 KB Output is correct
49 Correct 81 ms 18644 KB Output is correct
50 Correct 86 ms 22992 KB Output is correct
51 Correct 15 ms 4436 KB Output is correct
52 Correct 80 ms 16204 KB Output is correct
53 Correct 54 ms 10068 KB Output is correct
54 Correct 62 ms 11092 KB Output is correct
55 Correct 55 ms 10324 KB Output is correct
56 Correct 100 ms 22732 KB Output is correct
57 Correct 24 ms 8140 KB Output is correct
58 Correct 3 ms 1112 KB Output is correct
59 Correct 51 ms 9188 KB Output is correct
60 Correct 21 ms 7768 KB Output is correct