oj.uz

Submission #792464

# Submission time Handle Problem Language Result Execution time Memory
792464 2023-07-25T05:12:34 Z t6twotwo Abracadabra (CEOI22_abracadabra) C++17
50 / 100
 273 ms 33936 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
void shuffle(vector<int> &a) {
    int n = a.size();
    vector<int> b;
    int j = n / 2;
    for (int i = 0; i < n / 2; i++) {
        while (j < n && a[j] < a[i]) {
            b.push_back(a[j++]);
        }
        b.push_back(a[i]);
    }
    for (int i = j; i < n; i++) {
        b.push_back(a[i]);
    }
    swap(a, b);
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int N, Q;
    cin >> N >> Q;
    vector<int> A(N);
    for (int &x : A) {
        cin >> x;
    }
    if (N <= 1000) {
        vector<vector<int>> T;
        do {
            T.push_back(A);
            shuffle(A);
        } while (A != T.back());
        int M = T.size();
        while (Q--) {
            int t, i;
            cin >> t >> i;
            t = min(t, M - 1);
            i--;
            cout << T[t][i] << "\n";
        }
        return 0;
    }
    vector<int> q(Q);
    int t;
    for (auto &x : q) {
        cin >> t >> x;
        x--;
    }
    if (t == 0) {
        for (int x : q) {
            cout << A[x] << "\n";
        }
        return 0;
    }
    vector<int> f(N, N), stk;
    for (int i = N - 1; i >= 0; i--) {
        while (!stk.empty() && A[stk.back()] < A[i]) {
            stk.pop_back();
        }
        if (!stk.empty()) {
            f[i] = stk.back();
        }
        stk.push_back(i);
    }
    set<tuple<int, int, int>> s, s2;
    for (int i = 0; i < N; i = f[i]) {
        s.emplace(A[i], i, f[i]);
    }
    int T = N;
    while (t--) {
        while (1) {
            auto [_, l, r] = *prev(s.end());
            if (T - r + l < N / 2) {
                break;
            }
            T -= r - l;
            s2.insert(*prev(s.end()));
            s.erase(prev(s.end()));
        }
        if (T == N / 2) {
            break;
        }
        auto [v, l, r] = *prev(s.end());
        s.erase(prev(s.end()));
        int m = r - T + N / 2;
        s.emplace(v, l, m);
        for (int i = m; i < r; i = f[i]) {
            s.emplace(A[i], i, min(r, f[i]));
        }
    }
    s.insert(s2.begin(), s2.end());
    vector<int> B;
    for (auto [_, l, r] : s) {
        B.insert(B.end(), A.begin() + l, A.begin() + r);
    }
    for (int x : q) {
        cout << B[x] << "\n";
    }
    return 6/22;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 164 ms 8908 KB Output is correct
2 Correct 188 ms 12552 KB Output is correct
3 Correct 153 ms 13084 KB Output is correct
4 Correct 148 ms 10208 KB Output is correct
5 Correct 156 ms 11976 KB Output is correct
6 Correct 147 ms 10832 KB Output is correct
7 Correct 159 ms 12120 KB Output is correct
8 Correct 146 ms 10692 KB Output is correct
9 Correct 180 ms 10396 KB Output is correct
10 Correct 156 ms 10676 KB Output is correct
11 Correct 179 ms 10684 KB Output is correct
12 Correct 143 ms 9552 KB Output is correct
13 Correct 181 ms 10224 KB Output is correct
14 Correct 180 ms 11228 KB Output is correct
15 Correct 155 ms 10680 KB Output is correct
16 Correct 1 ms 320 KB Output is correct
17 Correct 150 ms 9728 KB Output is correct
18 Correct 177 ms 9604 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 273 ms 31488 KB Output is correct
2 Correct 253 ms 33936 KB Output is correct
3 Correct 191 ms 25836 KB Output is correct
4 Correct 202 ms 15428 KB Output is correct
5 Correct 174 ms 16728 KB Output is correct
6 Correct 155 ms 14508 KB Output is correct
7 Correct 200 ms 16996 KB Output is correct
8 Correct 182 ms 16756 KB Output is correct
9 Correct 170 ms 15876 KB Output is correct
10 Correct 186 ms 15236 KB Output is correct
11 Correct 159 ms 14304 KB Output is correct
12 Correct 175 ms 13976 KB Output is correct
13 Correct 175 ms 15132 KB Output is correct
14 Correct 184 ms 14056 KB Output is correct
15 Correct 194 ms 15432 KB Output is correct
16 Correct 17 ms 4080 KB Output is correct
17 Correct 151 ms 14284 KB Output is correct
18 Correct 126 ms 14012 KB Output is correct
19 Correct 59 ms 5900 KB Output is correct
20 Correct 54 ms 9380 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 43 ms 11144 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 164 ms 8908 KB Output is correct
2 Correct 188 ms 12552 KB Output is correct
3 Correct 153 ms 13084 KB Output is correct
4 Correct 148 ms 10208 KB Output is correct
5 Correct 156 ms 11976 KB Output is correct
6 Correct 147 ms 10832 KB Output is correct
7 Correct 159 ms 12120 KB Output is correct
8 Correct 146 ms 10692 KB Output is correct
9 Correct 180 ms 10396 KB Output is correct
10 Correct 156 ms 10676 KB Output is correct
11 Correct 179 ms 10684 KB Output is correct
12 Correct 143 ms 9552 KB Output is correct
13 Correct 181 ms 10224 KB Output is correct
14 Correct 180 ms 11228 KB Output is correct
15 Correct 155 ms 10680 KB Output is correct
16 Correct 1 ms 320 KB Output is correct
17 Correct 150 ms 9728 KB Output is correct
18 Correct 177 ms 9604 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 273 ms 31488 KB Output is correct
22 Correct 253 ms 33936 KB Output is correct
23 Correct 191 ms 25836 KB Output is correct
24 Correct 202 ms 15428 KB Output is correct
25 Correct 174 ms 16728 KB Output is correct
26 Correct 155 ms 14508 KB Output is correct
27 Correct 200 ms 16996 KB Output is correct
28 Correct 182 ms 16756 KB Output is correct
29 Correct 170 ms 15876 KB Output is correct
30 Correct 186 ms 15236 KB Output is correct
31 Correct 159 ms 14304 KB Output is correct
32 Correct 175 ms 13976 KB Output is correct
33 Correct 175 ms 15132 KB Output is correct
34 Correct 184 ms 14056 KB Output is correct
35 Correct 194 ms 15432 KB Output is correct
36 Correct 17 ms 4080 KB Output is correct
37 Correct 151 ms 14284 KB Output is correct
38 Correct 126 ms 14012 KB Output is correct
39 Correct 59 ms 5900 KB Output is correct
40 Correct 54 ms 9380 KB Output is correct
41 Incorrect 43 ms 11144 KB Output isn't correct
42 Halted 0 ms 0 KB -