oj.uz

답안 #946695

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
946695 2024-03-14T22:46:02 Z vladilius Passport (JOI23_passport) C++17
100 / 100
 666 ms 83820 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
const int inf = 1e9;

struct ST{
    vector<vector<pii>> t;
    vector<int> idx;
    int n;
    void build(int v, int tl, int tr){
        if (tl == tr){
            idx[tl] = v;
            return;
        }
        int tm = (tl + tr) / 2, vv = 2 * v;
        build(vv, tl, tm);
        build(vv + 1, tm + 1, tr);
        t[vv].push_back({v, 0});
        t[vv + 1].push_back({v, 0});
    }
    ST(int ns){
        n = ns;
        t.resize(4 * n);
        idx.resize(n + 1);
        build(1, 1, n);
    }
    void add(int v, int tl, int tr, int& l, int& r, int& i){
        if (l > tr || r < tl) return;
        if (l <= tl && tr <= r){
            if (i != v){
                t[v].push_back({i, 1});
            }
            return;
        }
        int tm = (tl + tr) / 2, vv = 2 * v;
        add(vv, tl, tm, l, r, i);
        add(vv + 1, tm + 1, tr, l, r, i);
    }
    void add(int p, int l, int r){
        add(1, 1, n, l, r, idx[p]);
    }
};

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    int n; cin>>n;
    ST T(n);
    for (int i = 1; i <= n; i++){
        int l, r; cin>>l>>r;
        T.add(i, l, r);
    }
    vector<int> out(4 * n);
    auto dijkstra = [&](int v){
        priority_queue<pii, vector<pii>, greater<pii>> pq;
        pq.push({0, v});
        vector<int> dist(4 * n, inf);
        dist[v] = 0;
        while (!pq.empty()){
            auto [d, k] = pq.top(); pq.pop();
            for (auto [i, w]: T.t[k]){
                if (dist[i] > dist[k] + w){
                    dist[i] = dist[k] + w;
                    pq.push({dist[i], i});
                }
            }
        }
        dist[v] = 1;
        for (int i = 1; i < 4 * n; i++){
            out[i] += dist[i];
        }
    };
    dijkstra(T.idx[1]);
    dijkstra(T.idx[n]);
    for (int i = 1; i <= n; i++){
        out[T.idx[i]]--;
    }
    for (int i = 1; i < 4 * n; i++){
        out[i] = min(out[i], inf);
    }
    
    priority_queue<pii, vector<pii>, greater<pii>> pq;
    for (int i = 1; i < 4 * n; i++){
        if (out[i] != inf){
            pq.push({out[i], i});
        }
    }
    while (!pq.empty()){
        auto [d, v] = pq.top(); pq.pop();
        for (auto [i, w]: T.t[v]){
            if (out[i] > out[v] + w){
                out[i] = out[v] + w;
                pq.push({out[i], i});
            }
        }
    }
    
    int q; cin>>q;
    while (q--){
        int x; cin>>x;
        int ans = out[T.idx[x]];
        if (ans == inf){
            cout<<-1<<"\n";
            continue;
        }
        cout<<ans<<"\n";
    }
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 641 ms 71484 KB Output is correct
5 Correct 297 ms 51764 KB Output is correct
6 Correct 142 ms 43932 KB Output is correct
7 Correct 228 ms 43488 KB Output is correct
8 Correct 107 ms 43672 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 460 KB Output is correct

Subtask #3
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 460 KB Output is correct
16 Correct 4 ms 1116 KB Output is correct
17 Correct 3 ms 1116 KB Output is correct
18 Correct 4 ms 1372 KB Output is correct
19 Correct 4 ms 1368 KB Output is correct
20 Correct 2 ms 860 KB Output is correct
21 Correct 3 ms 860 KB Output is correct
22 Correct 2 ms 928 KB Output is correct
23 Correct 3 ms 1116 KB Output is correct
24 Correct 2 ms 1116 KB Output is correct

Subtask #4
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 460 KB Output is correct
16 Correct 4 ms 1116 KB Output is correct
17 Correct 3 ms 1116 KB Output is correct
18 Correct 4 ms 1372 KB Output is correct
19 Correct 4 ms 1368 KB Output is correct
20 Correct 2 ms 860 KB Output is correct
21 Correct 3 ms 860 KB Output is correct
22 Correct 2 ms 928 KB Output is correct
23 Correct 3 ms 1116 KB Output is correct
24 Correct 2 ms 1116 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 4 ms 1256 KB Output is correct
28 Correct 4 ms 1116 KB Output is correct
29 Correct 2 ms 980 KB Output is correct
30 Correct 2 ms 860 KB Output is correct
31 Correct 3 ms 908 KB Output is correct

Subtask #5
46.0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 641 ms 71484 KB Output is correct
5 Correct 297 ms 51764 KB Output is correct
6 Correct 142 ms 43932 KB Output is correct
7 Correct 228 ms 43488 KB Output is correct
8 Correct 107 ms 43672 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 460 KB Output is correct
24 Correct 4 ms 1116 KB Output is correct
25 Correct 3 ms 1116 KB Output is correct
26 Correct 4 ms 1372 KB Output is correct
27 Correct 4 ms 1368 KB Output is correct
28 Correct 2 ms 860 KB Output is correct
29 Correct 3 ms 860 KB Output is correct
30 Correct 2 ms 928 KB Output is correct
31 Correct 3 ms 1116 KB Output is correct
32 Correct 2 ms 1116 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 4 ms 1256 KB Output is correct
36 Correct 4 ms 1116 KB Output is correct
37 Correct 2 ms 980 KB Output is correct
38 Correct 2 ms 860 KB Output is correct
39 Correct 3 ms 908 KB Output is correct
40 Correct 666 ms 75760 KB Output is correct
41 Correct 339 ms 56780 KB Output is correct
42 Correct 428 ms 83132 KB Output is correct
43 Correct 408 ms 83820 KB Output is correct
44 Correct 175 ms 48544 KB Output is correct
45 Correct 225 ms 52500 KB Output is correct
46 Correct 108 ms 20812 KB Output is correct
47 Correct 362 ms 59288 KB Output is correct
48 Correct 285 ms 63548 KB Output is correct