oj.uz

답안 #952651

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
952651 2024-03-24T12:53:46 Z LOLOLO Passport (JOI23_passport) C++17
48 / 100
 2000 ms 741828 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

#define           f     first
#define           s     second
#define           pb    push_back
#define           ep    emplace
#define           eb    emplace_back
#define           lb    lower_bound
#define           ub    upper_bound
#define       all(x)    x.begin(), x.end()
#define      rall(x)    x.rbegin(), x.rend()
#define   uniquev(v)    sort(all(v)), (v).resize(unique(all(v)) - (v).begin())
#define     mem(f,x)    memset(f , x , sizeof(f))
#define        sz(x)    (int)(x).size()
#define  __lcm(a, b)    (1ll * ((a) / __gcd((a), (b))) * (b))
#define          mxx    *max_element
#define          mnn    *min_element
#define    cntbit(x)    __builtin_popcountll(x)
#define       len(x)    (int)(x.length())

const int N = 2e5 + 10;
int lst, ss[N], n;
vector <pair <int, int>> ed[N * 6];

void build(int id, int l, int r) {
    if (l == r) {
        ss[l] = id;
        return;
    }

    int m = (l + r) / 2;
    ed[id * 2].pb({id, 0});
    ed[id * 2 + 1].pb({id, 0});
    build(id * 2, l, m);
    build(id * 2 + 1, m + 1, r);
}

void dfs(int id, int l, int r, int u, int v, int cur) {
    if (l > v || r < u)
        return;

    if (l >= r && u <= v) {
        ed[id].pb({cur, 0});
        return;
    }

    int m = (l + r) / 2;
    dfs(id * 2, l, m, u, v, cur);
    dfs(id * 2 + 1, m + 1, r, u, v, cur);
}

deque <int> dq[N];

void dijkstra(vector <int> &dis, vector <int> save, vector <int> cc) {
    vector <bool> used(lst + 1, 0);
    dis.assign(lst + 1, 2e8);
    priority_queue <pair <int, int>, vector <pair <int, int>>, greater <pair <int, int>>> pq;

    for (auto x : save) {
        if (cc[x] <= n) {
            dis[x] = cc[x];
            dq[cc[x]].pb(x);
        } 
    }

    for (int i = 0; i <= n; i++) {
        while (sz(dq[i])) {
            int t = dq[i].front();
            dq[i].pop_front();

            if (used[t])
                continue;

            used[t] = 1;
            for (auto x : ed[t]) {
                if (used[x.f])
                    continue;

                if (x.s == 0) {
                    if (dis[x.f] > dis[t]) {
                        dis[x.f] = dis[t];
                        dq[dis[t]].push_back(x.f);
                    }
                } else {
                    if (dis[x.f] > dis[t] + 1) {
                        dis[x.f] = dis[t] + 1;
                        dq[dis[t] + 1].push_back(x.f);
                    }
                }
            }
        }
    }
}

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

    cin >> n;

    lst = n * 4;
    build(1, 1, n);

    for (int i = 1; i <= n; i++) {
        int l, r;
        cin >> l >> r;
        lst++;
        ed[lst].pb({ss[i], 1});
        dfs(1, 1, n, l, r, lst);
    }

    vector <int> d1, d2, d3, cst(lst + 1, 0), id;
    dijkstra(d1, {ss[1]}, cst);
    dijkstra(d2, {ss[n]}, cst);

    for (int i = 1; i <= lst; i++) {
        id.pb(i);
        cst[i] = d1[i] + d2[i];
    }

    dijkstra(d3, id, cst);

    int q;
    cin >> q;

    while (q--) {
        int x;
        cin >> x;
        if (d3[ss[x]] >= 1e8) {
            cout << -1 << '\n';
        } else {
            cout << d3[ss[x]] << '\n';
        }
    }


    return 0;
}

Subtask #1
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 77 ms 163080 KB Output is correct
2 Correct 79 ms 163624 KB Output is correct
3 Correct 78 ms 163156 KB Output is correct
4 Execution timed out 2109 ms 741828 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 87 ms 163156 KB Output is correct
2 Correct 80 ms 163408 KB Output is correct
3 Correct 76 ms 163152 KB Output is correct
4 Correct 77 ms 163160 KB Output is correct
5 Correct 78 ms 163152 KB Output is correct
6 Correct 75 ms 163268 KB Output is correct
7 Correct 76 ms 163204 KB Output is correct
8 Correct 76 ms 163160 KB Output is correct
9 Correct 85 ms 163160 KB Output is correct
10 Correct 75 ms 163216 KB Output is correct
11 Correct 85 ms 163412 KB Output is correct
12 Correct 77 ms 163388 KB Output is correct
13 Correct 86 ms 163764 KB Output is correct
14 Correct 85 ms 163792 KB Output is correct
15 Correct 75 ms 163416 KB Output is correct

Subtask #3
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 87 ms 163156 KB Output is correct
2 Correct 80 ms 163408 KB Output is correct
3 Correct 76 ms 163152 KB Output is correct
4 Correct 77 ms 163160 KB Output is correct
5 Correct 78 ms 163152 KB Output is correct
6 Correct 75 ms 163268 KB Output is correct
7 Correct 76 ms 163204 KB Output is correct
8 Correct 76 ms 163160 KB Output is correct
9 Correct 85 ms 163160 KB Output is correct
10 Correct 75 ms 163216 KB Output is correct
11 Correct 85 ms 163412 KB Output is correct
12 Correct 77 ms 163388 KB Output is correct
13 Correct 86 ms 163764 KB Output is correct
14 Correct 85 ms 163792 KB Output is correct
15 Correct 75 ms 163416 KB Output is correct
16 Correct 135 ms 180396 KB Output is correct
17 Correct 90 ms 164184 KB Output is correct
18 Correct 158 ms 196176 KB Output is correct
19 Correct 158 ms 194416 KB Output is correct
20 Correct 77 ms 163844 KB Output is correct
21 Correct 96 ms 168536 KB Output is correct
22 Correct 148 ms 201300 KB Output is correct
23 Correct 152 ms 190548 KB Output is correct
24 Correct 150 ms 191568 KB Output is correct

Subtask #4
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 87 ms 163156 KB Output is correct
2 Correct 80 ms 163408 KB Output is correct
3 Correct 76 ms 163152 KB Output is correct
4 Correct 77 ms 163160 KB Output is correct
5 Correct 78 ms 163152 KB Output is correct
6 Correct 75 ms 163268 KB Output is correct
7 Correct 76 ms 163204 KB Output is correct
8 Correct 76 ms 163160 KB Output is correct
9 Correct 85 ms 163160 KB Output is correct
10 Correct 75 ms 163216 KB Output is correct
11 Correct 85 ms 163412 KB Output is correct
12 Correct 77 ms 163388 KB Output is correct
13 Correct 86 ms 163764 KB Output is correct
14 Correct 85 ms 163792 KB Output is correct
15 Correct 75 ms 163416 KB Output is correct
16 Correct 135 ms 180396 KB Output is correct
17 Correct 90 ms 164184 KB Output is correct
18 Correct 158 ms 196176 KB Output is correct
19 Correct 158 ms 194416 KB Output is correct
20 Correct 77 ms 163844 KB Output is correct
21 Correct 96 ms 168536 KB Output is correct
22 Correct 148 ms 201300 KB Output is correct
23 Correct 152 ms 190548 KB Output is correct
24 Correct 150 ms 191568 KB Output is correct
25 Correct 77 ms 163188 KB Output is correct
26 Correct 79 ms 163152 KB Output is correct
27 Correct 134 ms 181332 KB Output is correct
28 Correct 79 ms 164200 KB Output is correct
29 Correct 77 ms 163920 KB Output is correct
30 Correct 97 ms 168148 KB Output is correct
31 Correct 129 ms 183780 KB Output is correct

Subtask #5
0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 77 ms 163080 KB Output is correct
2 Correct 79 ms 163624 KB Output is correct
3 Correct 78 ms 163156 KB Output is correct
4 Execution timed out 2109 ms 741828 KB Time limit exceeded
5 Halted 0 ms 0 KB -