oj.uz

답안 #1120108

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1120108 2024-11-28T02:55:53 Z Sharky Passport (JOI23_passport) C++17
100 / 100
 788 ms 137296 KB 
#include "bits/stdc++.h"
using namespace std;

#define int long long
const int N = 200008;
const int INF = 1e9;

int n, q, d[4 * N], leaf[N], ll[N], rr[N];
vector<pair<int, int>> g[4 * N];

void ae(int u, int v, int w) {
    g[u].push_back({v, w});
}

struct SegTree {
    int size = 1;
    void init(int n) {
        while (size < n) size *= 2;
    }
    void build(int l, int r, int id) {
        if (l == r) {
            leaf[l] = id;
            return;
        }
        int mid = (l + r) / 2;
        build(l, mid, id * 2);
        build(mid + 1, r, id * 2 + 1);
        ae(id * 2, id, 0);
        ae(id * 2 + 1, id, 0);
    }
    void update(int x, int ql, int qr, int l, int r, int id) {
        if (qr < l || r < ql) return;
        if (ql <= l && r <= qr) {
            if (l != r) ae(id, leaf[x], 1);
            else ae(leaf[l], leaf[x], 1);
            return;
        }
        int mid = (l + r) / 2;
        update(x, ql, qr, l, mid, id * 2);
        update(x, ql, qr, mid + 1, r, id * 2 + 1);
    }
} ST;

vector<int> compute(int s) {
    vector<int> dist(4 * N, INF);
    priority_queue<pair<int, int>, vector<pair<int, int>>, greater<>> pq;
    pq.push({0, s});
    dist[s] = 0;
    while (!pq.empty()) {
        auto [dd, u] = pq.top();
        pq.pop();
        if (dist[u] != dd) continue;
        for (auto& [v, w] : g[u]) {
            if (dist[u] + w < dist[v]) {
                dist[v] = dist[u] + w;
                pq.push({dist[v], v});
            }
        }
    }
    return dist;
}

int32_t main() {
    ios::sync_with_stdio(0); cin.tie(0);
    cin >> n;
    ST.init(n + 1);
    ST.build(1, n, 1);
    for (int i = 1; i <= n; i++) {
        cin >> ll[i] >> rr[i];
        ST.update(i, ll[i], rr[i], 1, n, 1);
    }
    vector<int> d1 = compute(leaf[1]);
    vector<int> dn = compute(leaf[n]);
    priority_queue<pair<int, int>, vector<pair<int, int>>, greater<>> pq;
    for (int i = 0; i < 4 * N; i++) d[i] = INF;
    for (int i = 1; i <= n; i++) {
        d[leaf[i]] = d1[leaf[i]] + dn[leaf[i]] - 1;
        if (ll[i] == 1 && rr[i] == n) d[leaf[i]] = 1;
        else if (ll[i] == 1) d[leaf[i]] = dn[leaf[i]];
        else if (rr[i] == n) d[leaf[i]] = d1[leaf[i]];
        // cout << "dist; " << d1[leaf[i]] << " " << dn[leaf[i]] << '\n';
        // if (ll[i] == 1 && rr[i] == n) d[leaf[i]] = 1;
        // else if (rr[i] == n) d[leaf[i]]--;
        // else if (ll[i] == 1) d[leaf[i]]--;
        // cout << d[leaf[i]] << " " << i << '\n';
        pq.push({d[leaf[i]], leaf[i]});
    }
    while (!pq.empty()) {
        auto [dd, u] = pq.top();
        pq.pop();
        if (d[u] != dd) continue;
        for (auto& [v, w] : g[u]) {
            if (d[u] + w < d[v]) {
                d[v] = d[u] + w;
                pq.push({d[v], v});
            }
        }
    }
    cin >> q;
    while (q--) {
        int x;
        cin >> x;
        if (d[leaf[x]] >= INF) cout << "-1\n";
        else cout << d[leaf[x]] << '\n';
    }
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 42576 KB Output is correct
2 Correct 8 ms 42604 KB Output is correct
3 Correct 8 ms 42576 KB Output is correct
4 Correct 727 ms 120684 KB Output is correct
5 Correct 321 ms 79296 KB Output is correct
6 Correct 177 ms 69048 KB Output is correct
7 Correct 187 ms 67120 KB Output is correct
8 Correct 165 ms 97492 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 42576 KB Output is correct
2 Correct 9 ms 42576 KB Output is correct
3 Correct 8 ms 42576 KB Output is correct
4 Correct 10 ms 42576 KB Output is correct
5 Correct 8 ms 42576 KB Output is correct
6 Correct 10 ms 42576 KB Output is correct
7 Correct 8 ms 42576 KB Output is correct
8 Correct 8 ms 42576 KB Output is correct
9 Correct 8 ms 42580 KB Output is correct
10 Correct 8 ms 42580 KB Output is correct
11 Correct 9 ms 42592 KB Output is correct
12 Correct 10 ms 42580 KB Output is correct
13 Correct 9 ms 42764 KB Output is correct
14 Correct 8 ms 42580 KB Output is correct
15 Correct 9 ms 42580 KB Output is correct

Subtask #3
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 42576 KB Output is correct
2 Correct 9 ms 42576 KB Output is correct
3 Correct 8 ms 42576 KB Output is correct
4 Correct 10 ms 42576 KB Output is correct
5 Correct 8 ms 42576 KB Output is correct
6 Correct 10 ms 42576 KB Output is correct
7 Correct 8 ms 42576 KB Output is correct
8 Correct 8 ms 42576 KB Output is correct
9 Correct 8 ms 42580 KB Output is correct
10 Correct 8 ms 42580 KB Output is correct
11 Correct 9 ms 42592 KB Output is correct
12 Correct 10 ms 42580 KB Output is correct
13 Correct 9 ms 42764 KB Output is correct
14 Correct 8 ms 42580 KB Output is correct
15 Correct 9 ms 42580 KB Output is correct
16 Correct 17 ms 43376 KB Output is correct
17 Correct 11 ms 43092 KB Output is correct
18 Correct 11 ms 43604 KB Output is correct
19 Correct 16 ms 43524 KB Output is correct
20 Correct 10 ms 43092 KB Output is correct
21 Correct 12 ms 43092 KB Output is correct
22 Correct 9 ms 42836 KB Output is correct
23 Correct 11 ms 43092 KB Output is correct
24 Correct 11 ms 43348 KB Output is correct

Subtask #4
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 42576 KB Output is correct
2 Correct 9 ms 42576 KB Output is correct
3 Correct 8 ms 42576 KB Output is correct
4 Correct 10 ms 42576 KB Output is correct
5 Correct 8 ms 42576 KB Output is correct
6 Correct 10 ms 42576 KB Output is correct
7 Correct 8 ms 42576 KB Output is correct
8 Correct 8 ms 42576 KB Output is correct
9 Correct 8 ms 42580 KB Output is correct
10 Correct 8 ms 42580 KB Output is correct
11 Correct 9 ms 42592 KB Output is correct
12 Correct 10 ms 42580 KB Output is correct
13 Correct 9 ms 42764 KB Output is correct
14 Correct 8 ms 42580 KB Output is correct
15 Correct 9 ms 42580 KB Output is correct
16 Correct 17 ms 43376 KB Output is correct
17 Correct 11 ms 43092 KB Output is correct
18 Correct 11 ms 43604 KB Output is correct
19 Correct 16 ms 43524 KB Output is correct
20 Correct 10 ms 43092 KB Output is correct
21 Correct 12 ms 43092 KB Output is correct
22 Correct 9 ms 42836 KB Output is correct
23 Correct 11 ms 43092 KB Output is correct
24 Correct 11 ms 43348 KB Output is correct
25 Correct 11 ms 42712 KB Output is correct
26 Correct 10 ms 42580 KB Output is correct
27 Correct 11 ms 43388 KB Output is correct
28 Correct 11 ms 43092 KB Output is correct
29 Correct 10 ms 43092 KB Output is correct
30 Correct 11 ms 43080 KB Output is correct
31 Correct 15 ms 43204 KB Output is correct

Subtask #5
46.0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 42576 KB Output is correct
2 Correct 8 ms 42604 KB Output is correct
3 Correct 8 ms 42576 KB Output is correct
4 Correct 727 ms 120684 KB Output is correct
5 Correct 321 ms 79296 KB Output is correct
6 Correct 177 ms 69048 KB Output is correct
7 Correct 187 ms 67120 KB Output is correct
8 Correct 165 ms 97492 KB Output is correct
9 Correct 10 ms 42576 KB Output is correct
10 Correct 9 ms 42576 KB Output is correct
11 Correct 8 ms 42576 KB Output is correct
12 Correct 10 ms 42576 KB Output is correct
13 Correct 8 ms 42576 KB Output is correct
14 Correct 10 ms 42576 KB Output is correct
15 Correct 8 ms 42576 KB Output is correct
16 Correct 8 ms 42576 KB Output is correct
17 Correct 8 ms 42580 KB Output is correct
18 Correct 8 ms 42580 KB Output is correct
19 Correct 9 ms 42592 KB Output is correct
20 Correct 10 ms 42580 KB Output is correct
21 Correct 9 ms 42764 KB Output is correct
22 Correct 8 ms 42580 KB Output is correct
23 Correct 9 ms 42580 KB Output is correct
24 Correct 17 ms 43376 KB Output is correct
25 Correct 11 ms 43092 KB Output is correct
26 Correct 11 ms 43604 KB Output is correct
27 Correct 16 ms 43524 KB Output is correct
28 Correct 10 ms 43092 KB Output is correct
29 Correct 12 ms 43092 KB Output is correct
30 Correct 9 ms 42836 KB Output is correct
31 Correct 11 ms 43092 KB Output is correct
32 Correct 11 ms 43348 KB Output is correct
33 Correct 11 ms 42712 KB Output is correct
34 Correct 10 ms 42580 KB Output is correct
35 Correct 11 ms 43388 KB Output is correct
36 Correct 11 ms 43092 KB Output is correct
37 Correct 10 ms 43092 KB Output is correct
38 Correct 11 ms 43080 KB Output is correct
39 Correct 15 ms 43204 KB Output is correct
40 Correct 788 ms 129764 KB Output is correct
41 Correct 348 ms 82752 KB Output is correct
42 Correct 449 ms 135300 KB Output is correct
43 Correct 442 ms 137296 KB Output is correct
44 Correct 223 ms 71992 KB Output is correct
45 Correct 288 ms 86392 KB Output is correct
46 Correct 168 ms 58136 KB Output is correct
47 Correct 431 ms 90392 KB Output is correct
48 Correct 333 ms 105608 KB Output is correct