QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#794003#5466. Permutation CompressionJustJie#RE 0ms3596kbC++202.4kb2024-11-30 09:10:092024-11-30 09:10:09

Judging History

你现在查看的是最新测评结果

  • [2024-11-30 09:10:09]
  • 评测
  • 测评结果:RE
  • 用时:0ms
  • 内存:3596kb
  • [2024-11-30 09:10:09]
  • 提交

answer

/***************************************************************************************************
 * author : Jie Chen (4th Year CS)
 * school : Rochester Institute of Technology
 * created: 11.29.2024 19:49:43
****************************************************************************************************/
#include "bits/stdc++.h"

using namespace std;

using i64 = long long;
using Segment = array<int, 2>;

void work(int tc) {
    int n, m, k;
    cin >> n >> m >> k;

    vector<int> a(n), pos(n), b(m);

    for (int i = 0; i < n; i++) {
        cin >> a[i];
        a[i]--;
        pos[a[i]] = i;
    }
    for (int i = 0; i < m; i++) {
        cin >> b[i];
        b[i]--;
    }

    multiset<int> t;
    for (int i = 0; i < k; i++) {
        int x;
        cin >> x;
        t.insert(x);
    }

    const auto get = [&](int x) {
        return pos[x];
    };

    int cur = 0;
    vector<bool> del(n);
    for (int i = 0; i < m - 1; i++) {
        int l = get(b[i]);
        int r = get(b[i + 1]);
        if (r < l || l < cur) {
            cout << "NO\n";
            return;
        }
        cur = l;
        for (int j = l + 1; j < r; j++) {
            del[a[j]] = true;
        }
    }

    set<Segment> s;
    s.insert({0, n - 1});
    for (int tr = n - 1; tr >= 0; tr--) {
        int p = get(tr);
        // cout << tr << " " << p << "\n";
        auto it = prev(s.upper_bound({p, p}));
        auto [l, r] = *it;
        int sz = r - l + 1;
        if (del[tr]) {
            // cout << sz << "\n";
            if (t.empty()) {
                cout << "NO\n";
                return;
            }
            auto it2 = t.upper_bound(sz);
            if (it2 == t.begin()) {
                cout << "NO\n";
                return;
            }
            it2--;
            t.erase(it2);
        }
        s.erase(it);
        if (sz > 1) {
            if (p == l) {
                s.insert({l + 1, r});
            } else if (p == r) {
                s.insert({l, r - 1});
            } else {
                s.insert({l, p - 1});
                s.insert({p + 1, r});
            }
        }
    }
    cout << "YES\n";
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int T;
    cin >> T;
    for (int t = 1; T--; t++) {
        work(t);
    }
}

// ~ JustJie

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3596kb

input:

3
5 2 3
5 1 3 2 4
5 2
1 2 4
5 5 5
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
3 2 2
3 1 2
3 2
2 3

output:

YES
YES
NO

result:

ok 3 lines

Test #2:

score: -100
Runtime Error

input:

100
2 1 2
2 1
2
1 1
2 1 2
1 2
1
2 2
2 1 1
1 2
1
2
6 1 5
3 4 2 5 6 1
3
5 2 1 1 1
6 1 6
2 1 3 6 4 5
1
4 1 2 2 1 4
3 3 2
2 1 3
2 1 3
2 2
1 1 1
1
1
1
1 1 1
1
1
1
2 1 2
2 1
2
1 2
4 4 3
2 1 3 4
2 1 3 4
4 3 1
1 1 1
1
1
1
6 5 1
6 2 5 4 3 1
6 2 4 3 1
4
1 1 1
1
1
1
6 5 3
3 6 1 4 5 2
3 6 1 4 2
3 3 4
4 3 4
3 4 ...

output:


result: