Submission #867192

#	Time	Username	Problem	Language	Result	Execution time	Memory
867192		PagodePaiva	Abracadabra (CEOI22_abracadabra)	C++14	10 / 100	1585 ms	524288 KiB

Main

#include<bits/stdc++.h>

using namespace std;

int main(){
    ios::sync_with_stdio(false);cin.tie(0);
    int n, q;
    cin >> n >> q;

    vector <int> v;
    for(int i = 1;i <= n;i++){
        int x;
        cin >> x;
        v.push_back(x);
    }
    vector <array <int, 3>> query;

    for(int i = 1;i <= q;i++){
        int a, b;
        cin >> a >> b;
        query.push_back({a, b, i});
    }

    sort(query.begin(), query.end());

    map <array <int, 3>, int> resp;
    map <vector <int>, int> mark;
    int st = 0;
    bool ac = true;

    for(auto x : query){
        while(st < x[0] and ac){
            mark[v] = 1;

            vector <int> a, b;

            for(int i = 0;i < n/2;i++){
                a.push_back(v[i]);
            }

            for(int i = n/2;i < n;i++){
                b.push_back(v[i]);
            }

            vector <int> next;
            int l = 0, r = 0;

            while(l < n/2 or r < n/2){
                if(r == n/2){
                    swap(a, b);
                    swap(l, r);
                }
                if(l == n/2){
                    for(int i = r;i < n;i++){
                        next.push_back(b[i]);
                    }
                }

                if(a[l] < b[r]){
                    next.push_back(a[l]);
                    l++;
                }
                else{
                    next.push_back(b[r]);
                    r++;
                }
            }

            if(mark[next] == 1) ac = false;
            st++;
            v = next;
        }

        resp[x] = v[x[1]-1];
    }

    for(auto &x : query){
        swap(x[0], x[2]);
    }

    sort(query.begin(), query.end());

    for(auto x : query){
        cout << resp[{x[2], x[1], x[0]}] << '\n';
    }

    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 40
• Subtask 3: 0 / 25
• Subtask 4: 0 / 25