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답안 #957447

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
957447 2024-04-03T17:48:51 Z rockstar Passport (JOI23_passport) C++17
54 / 100
 871 ms 1048576 KB 
//#pragma GCC optimize("O3,unroll-loops,inline")

#include <bits/stdc++.h>

//#define int long long
#define all(a) a.begin(), a.end()

using namespace std;

constexpr int inf = 1e9;

struct segment_tree_upd_segment_get_point {
    vector<int> tree;
    int n;

    segment_tree_upd_segment_get_point(int n_) {
        n = n_;
        tree.resize(4 * n, inf);
    }

    void upd(int v, int tl, int tr, int l, int r, int x) {
        if (r < tl || tr < l)
            return;
        if (l <= tl && tr <= r) {
            tree[v] = min(tree[v], x);
            return;
        }
        int tm = (tl + tr) / 2;
        upd(v * 2, tl, tm, l, r, x), upd(v * 2 + 1, tm + 1, tr, l, r, x);
    }

    int get(int v, int tl, int tr, int pos) {
        if (tl == tr)
            return tree[v];
        int tm = (tl + tr) / 2;
        if (pos <= tm)
            return min(tree[v], get(v * 2, tl, tm, pos));
        else
            return min(tree[v], get(v * 2 + 1, tm + 1, tr, pos));
    }

    void upd(int l, int r, int x) {
        upd(1, 0, n - 1, l, r, x);
    }

    int get(int i) {
        return get(1, 0, n - 1, i);
    }
};

struct fenwick_tree {
    vector<int> tree;
    int n;

    fenwick_tree(int n_) {
        n = n_;
        tree.resize(n + 1, inf);
    }

    void upd(int i, int x) {
        ++i;
        for (; i > 0; i -= i & -i)
            tree[i] = min(tree[i], x);
    }

    int get(int i) {
        ++i;
        int x = inf;
        for (; i <= n; i += i & -i)
            x = min(x, tree[i]);
        return x;
    }
};

struct segment_tree_upd_point_get_segment {
    vector<int> tree;
    int n;

    segment_tree_upd_point_get_segment(int n_) {
        n = n_;
        tree.resize(4 * n, inf);
    }

    void upd(int v, int tl, int tr, int pos, int x) {
        if (tl == tr) {
            tree[v] = x;
            return;
        }
        int tm = (tl + tr) / 2;
        if (pos <= tm)
            upd(v * 2, tl, tm, pos, x);
        else
            upd(v * 2 + 1, tm + 1, tr, pos, x);
        tree[v] = min(tree[v * 2], tree[v * 2 + 1]);
    }

    int get(int v, int tl, int tr, int l, int r) {
        if (r < tl || tr < l)
            return inf;
        if (l <= tl && tr <= r)
            return tree[v];
        int tm = (tl + tr) / 2;
        return min(get(v * 2, tl, tm, l, r), get(v * 2 + 1, tm + 1, tr, l, r));
    }

    void upd(int pos, int x) {
        upd(1, 0, n - 1, pos, x);
    }

    int get(int l, int r) {
        return get(1, 0, n - 1, l, r);
    }
};

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;
    vector<pair<int, int>> p(n);
    for (auto &i: p)
        cin >> i.first >> i.second, --i.first, --i.second;
    int q;
    cin >> q;
    vector<int> k(q);
    for (int &i : k)
        cin >> i, --i;
    if (q == 1 && k[0] == 0) {
        multiset<int> now = {1};
        vector<vector<int>> upd(n + 1);
        upd[p[0].second + 1] = {1};
        for (int i = 0; i < n; ++i) {
            for (int j: upd[i])
                now.extract(j);
            if (now.empty()) {
                cout << -1;
                return 0;
            }
            int res = *now.begin();
            if (i == n - 1)
                cout << res;
            else {
                now.insert(res + 1);
                upd[p[i].second + 1].push_back(res + 1);
            }
        }
        return 0;
    }
    vector<vector<int>> left(n), right(n);
    for (int i = 0; i < n; ++i)
        left[p[i].first].push_back(i), right[p[i].second].push_back(i);
    vector<vector<int>> dp(n, vector<int>(n, inf));
    vector<fenwick_tree> dpl(n, fenwick_tree(n));
    vector<fenwick_tree> dpr(n, fenwick_tree(n));
    segment_tree_upd_point_get_segment mn(n);
    dp[0][n - 1] = 0;
    dpl[0].upd(n - 1 - (n - 1), 0);
    dpr[n - 1].upd(0, 0);
    for (int len = n; len >= 1; --len) {
        for (int l = 0; l < n; ++l) {
            int r = l + len - 1;
            if (r >= n)
                continue;
            dp[l][r] = min(min(dpl[l].get(n - 1 - r), dpr[r].get(l)), mn.get(l, r));
            for (int i: left[l]) {
                if (i <= r)
                    dpr[r].upd(i, dp[l][r] + 1);
                if (p[i].second == r)
                    mn.upd(i, dp[l][r] + 1);
            }
            for (int i: right[r])
                if (i >= l)
                    dpl[l].upd(n - 1 - i, dp[l][r] + 1);
        }
    }
    for (int i : k)
        cout << (dp[p[i].first][p[i].second] == inf ? -1 : dp[p[i].first][p[i].second] + 1) << ' ';
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 68 ms 13840 KB Output is correct
5 Correct 48 ms 13124 KB Output is correct
6 Correct 50 ms 15436 KB Output is correct
7 Correct 52 ms 18120 KB Output is correct
8 Correct 33 ms 10892 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 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 452 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 7 ms 1476 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 7 ms 1572 KB Output is correct
14 Correct 7 ms 1368 KB Output is correct
15 Correct 7 ms 1480 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 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 452 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 7 ms 1476 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 7 ms 1572 KB Output is correct
14 Correct 7 ms 1368 KB Output is correct
15 Correct 7 ms 1480 KB Output is correct
16 Correct 726 ms 65128 KB Output is correct
17 Correct 733 ms 73808 KB Output is correct
18 Correct 743 ms 74432 KB Output is correct
19 Correct 761 ms 70508 KB Output is correct
20 Correct 750 ms 74516 KB Output is correct
21 Correct 729 ms 74496 KB Output is correct
22 Correct 706 ms 74408 KB Output is correct
23 Correct 739 ms 74580 KB Output is correct
24 Correct 761 ms 74444 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 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 452 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 7 ms 1476 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 7 ms 1572 KB Output is correct
14 Correct 7 ms 1368 KB Output is correct
15 Correct 7 ms 1480 KB Output is correct
16 Correct 726 ms 65128 KB Output is correct
17 Correct 733 ms 73808 KB Output is correct
18 Correct 743 ms 74432 KB Output is correct
19 Correct 761 ms 70508 KB Output is correct
20 Correct 750 ms 74516 KB Output is correct
21 Correct 729 ms 74496 KB Output is correct
22 Correct 706 ms 74408 KB Output is correct
23 Correct 739 ms 74580 KB Output is correct
24 Correct 761 ms 74444 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 753 ms 69800 KB Output is correct
28 Correct 767 ms 74324 KB Output is correct
29 Correct 748 ms 74576 KB Output is correct
30 Correct 735 ms 74520 KB Output is correct
31 Correct 694 ms 69976 KB Output is correct

Subtask #5
0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 68 ms 13840 KB Output is correct
5 Correct 48 ms 13124 KB Output is correct
6 Correct 50 ms 15436 KB Output is correct
7 Correct 52 ms 18120 KB Output is correct
8 Correct 33 ms 10892 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 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 0 ms 452 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 7 ms 1476 KB Output is correct
20 Correct 7 ms 1372 KB Output is correct
21 Correct 7 ms 1572 KB Output is correct
22 Correct 7 ms 1368 KB Output is correct
23 Correct 7 ms 1480 KB Output is correct
24 Correct 726 ms 65128 KB Output is correct
25 Correct 733 ms 73808 KB Output is correct
26 Correct 743 ms 74432 KB Output is correct
27 Correct 761 ms 70508 KB Output is correct
28 Correct 750 ms 74516 KB Output is correct
29 Correct 729 ms 74496 KB Output is correct
30 Correct 706 ms 74408 KB Output is correct
31 Correct 739 ms 74580 KB Output is correct
32 Correct 761 ms 74444 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 753 ms 69800 KB Output is correct
36 Correct 767 ms 74324 KB Output is correct
37 Correct 748 ms 74576 KB Output is correct
38 Correct 735 ms 74520 KB Output is correct
39 Correct 694 ms 69976 KB Output is correct
40 Runtime error 871 ms 1048576 KB Execution killed with signal 9
41 Halted 0 ms 0 KB -