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답안 #1086695

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1086695 2024-09-11T09:28:20 Z daoquanglinh2007 Passport (JOI23_passport) C++17
100 / 100
 574 ms 84248 KB 
#include <bits/stdc++.h>
using namespace std;

#define pii pair <int, int>
#define fi first
#define se second
#define mp make_pair

const int NM = 2e5, inf = 1e9+7;

int N, Q, L[NM+5], R[NM+5];
vector <pii> adj[4*NM+5];
int dist[2][4*NM+5];
priority_queue <pii, vector <pii>, greater <pii> > pq;
int res[4*NM+5];

void update(int id, int l, int r, int u, int v, int x){
    if (v < l || u > r) return;
    if (l >= u && r <= v){
        if (l == r){
            adj[l].push_back(mp(x, 1));
        }
        else{
            adj[N+id].push_back(mp(x, 1));
        }
        return;
    }
    int mid = (l+r)/2;
    update(2*id, l, mid, u, v, x);
    update(2*id+1, mid+1, r, u, v, x);
}

void solve(int id, int l, int r){
    if (l == r) return;
    int mid = (l+r)/2;
    solve(2*id, l, mid);
    solve(2*id+1, mid+1, r);
    adj[(l < mid ? N+2*id : l)].push_back(mp(N+id, 0));
    adj[(mid+1 < r ? N+2*id+1 : r)].push_back(mp(N+id, 0));
}

void binary_bfs(int s, int dist[NM+5]){
    for (int i = 1; i <= 4*N; i++) dist[i] = +inf;
    dist[s] = 0;
    pq.push(mp(0, s));
    while (!pq.empty()){
        int u = pq.top().se;
        if (dist[u] != pq.top().fi){
            pq.pop();
            continue;
        }
        pq.pop();
        for (pii p : adj[u]){
            int v = p.fi, w = p.se;
            if (dist[u]+w >= dist[v]) continue;
            dist[v] = dist[u]+w;
            pq.push(mp(dist[v], v));
        }
    }
}

void dijkstra(){
    for (int i = 1; i <= 4*N; i++){
        res[i] = min(dist[0][i]+dist[1][i]-(i > 1 && i < N), +inf);
        pq.push(mp(res[i], i));
    }
    while (!pq.empty()){
        int u = pq.top().se;
        if (res[u] != pq.top().fi){
            pq.pop();
            continue;
        }
        pq.pop();
        for (pii p : adj[u]){
            int v = p.fi, w = p.se;
            if (res[u]+w >= res[v]) continue;
            res[v] = res[u]+w;
            pq.push(mp(res[v], v));
        }
    }
}

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

    cin >> N;
    for (int i = 1; i <= N; i++){
        cin >> L[i] >> R[i];
        update(1, 1, N, L[i], R[i], i);
    }
    solve(1, 1, N);
    binary_bfs(1, dist[0]);
    binary_bfs(N, dist[1]);
    dijkstra();
    cin >> Q;
    while (Q--){
        int X; cin >> X;
        if (res[X] == +inf) cout << -1; else cout << res[X];
        cout << '\n';
    }
    return 0;
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 19256 KB Output is correct
2 Correct 8 ms 19036 KB Output is correct
3 Correct 9 ms 19036 KB Output is correct
4 Correct 546 ms 77468 KB Output is correct
5 Correct 338 ms 58308 KB Output is correct
6 Correct 171 ms 53444 KB Output is correct
7 Correct 220 ms 52540 KB Output is correct
8 Correct 159 ms 58728 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 19036 KB Output is correct
2 Correct 9 ms 19036 KB Output is correct
3 Correct 8 ms 19036 KB Output is correct
4 Correct 9 ms 19056 KB Output is correct
5 Correct 8 ms 19220 KB Output is correct
6 Correct 9 ms 19032 KB Output is correct
7 Correct 14 ms 19272 KB Output is correct
8 Correct 11 ms 19036 KB Output is correct
9 Correct 9 ms 19156 KB Output is correct
10 Correct 8 ms 19036 KB Output is correct
11 Correct 8 ms 19292 KB Output is correct
12 Correct 9 ms 19356 KB Output is correct
13 Correct 9 ms 19372 KB Output is correct
14 Correct 9 ms 19288 KB Output is correct
15 Correct 13 ms 19292 KB Output is correct

Subtask #3
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 19036 KB Output is correct
2 Correct 9 ms 19036 KB Output is correct
3 Correct 8 ms 19036 KB Output is correct
4 Correct 9 ms 19056 KB Output is correct
5 Correct 8 ms 19220 KB Output is correct
6 Correct 9 ms 19032 KB Output is correct
7 Correct 14 ms 19272 KB Output is correct
8 Correct 11 ms 19036 KB Output is correct
9 Correct 9 ms 19156 KB Output is correct
10 Correct 8 ms 19036 KB Output is correct
11 Correct 8 ms 19292 KB Output is correct
12 Correct 9 ms 19356 KB Output is correct
13 Correct 9 ms 19372 KB Output is correct
14 Correct 9 ms 19288 KB Output is correct
15 Correct 13 ms 19292 KB Output is correct
16 Correct 14 ms 19880 KB Output is correct
17 Correct 12 ms 19800 KB Output is correct
18 Correct 12 ms 20060 KB Output is correct
19 Correct 13 ms 20056 KB Output is correct
20 Correct 9 ms 19732 KB Output is correct
21 Correct 10 ms 19804 KB Output is correct
22 Correct 9 ms 19804 KB Output is correct
23 Correct 10 ms 19804 KB Output is correct
24 Correct 10 ms 19816 KB Output is correct

Subtask #4
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 19036 KB Output is correct
2 Correct 9 ms 19036 KB Output is correct
3 Correct 8 ms 19036 KB Output is correct
4 Correct 9 ms 19056 KB Output is correct
5 Correct 8 ms 19220 KB Output is correct
6 Correct 9 ms 19032 KB Output is correct
7 Correct 14 ms 19272 KB Output is correct
8 Correct 11 ms 19036 KB Output is correct
9 Correct 9 ms 19156 KB Output is correct
10 Correct 8 ms 19036 KB Output is correct
11 Correct 8 ms 19292 KB Output is correct
12 Correct 9 ms 19356 KB Output is correct
13 Correct 9 ms 19372 KB Output is correct
14 Correct 9 ms 19288 KB Output is correct
15 Correct 13 ms 19292 KB Output is correct
16 Correct 14 ms 19880 KB Output is correct
17 Correct 12 ms 19800 KB Output is correct
18 Correct 12 ms 20060 KB Output is correct
19 Correct 13 ms 20056 KB Output is correct
20 Correct 9 ms 19732 KB Output is correct
21 Correct 10 ms 19804 KB Output is correct
22 Correct 9 ms 19804 KB Output is correct
23 Correct 10 ms 19804 KB Output is correct
24 Correct 10 ms 19816 KB Output is correct
25 Correct 7 ms 19036 KB Output is correct
26 Correct 7 ms 19036 KB Output is correct
27 Correct 11 ms 19804 KB Output is correct
28 Correct 11 ms 19700 KB Output is correct
29 Correct 11 ms 19788 KB Output is correct
30 Correct 11 ms 19804 KB Output is correct
31 Correct 11 ms 19800 KB Output is correct

Subtask #5
46.0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 19256 KB Output is correct
2 Correct 8 ms 19036 KB Output is correct
3 Correct 9 ms 19036 KB Output is correct
4 Correct 546 ms 77468 KB Output is correct
5 Correct 338 ms 58308 KB Output is correct
6 Correct 171 ms 53444 KB Output is correct
7 Correct 220 ms 52540 KB Output is correct
8 Correct 159 ms 58728 KB Output is correct
9 Correct 11 ms 19036 KB Output is correct
10 Correct 9 ms 19036 KB Output is correct
11 Correct 8 ms 19036 KB Output is correct
12 Correct 9 ms 19056 KB Output is correct
13 Correct 8 ms 19220 KB Output is correct
14 Correct 9 ms 19032 KB Output is correct
15 Correct 14 ms 19272 KB Output is correct
16 Correct 11 ms 19036 KB Output is correct
17 Correct 9 ms 19156 KB Output is correct
18 Correct 8 ms 19036 KB Output is correct
19 Correct 8 ms 19292 KB Output is correct
20 Correct 9 ms 19356 KB Output is correct
21 Correct 9 ms 19372 KB Output is correct
22 Correct 9 ms 19288 KB Output is correct
23 Correct 13 ms 19292 KB Output is correct
24 Correct 14 ms 19880 KB Output is correct
25 Correct 12 ms 19800 KB Output is correct
26 Correct 12 ms 20060 KB Output is correct
27 Correct 13 ms 20056 KB Output is correct
28 Correct 9 ms 19732 KB Output is correct
29 Correct 10 ms 19804 KB Output is correct
30 Correct 9 ms 19804 KB Output is correct
31 Correct 10 ms 19804 KB Output is correct
32 Correct 10 ms 19816 KB Output is correct
33 Correct 7 ms 19036 KB Output is correct
34 Correct 7 ms 19036 KB Output is correct
35 Correct 11 ms 19804 KB Output is correct
36 Correct 11 ms 19700 KB Output is correct
37 Correct 11 ms 19788 KB Output is correct
38 Correct 11 ms 19804 KB Output is correct
39 Correct 11 ms 19800 KB Output is correct
40 Correct 574 ms 79256 KB Output is correct
41 Correct 341 ms 60076 KB Output is correct
42 Correct 424 ms 84236 KB Output is correct
43 Correct 432 ms 84248 KB Output is correct
44 Correct 208 ms 55220 KB Output is correct
45 Correct 255 ms 61888 KB Output is correct
46 Correct 119 ms 35260 KB Output is correct
47 Correct 381 ms 62000 KB Output is correct
48 Correct 310 ms 70180 KB Output is correct