Submission #942834

#	Time	Username	Problem	Language	Result	Execution time	Memory
942834		12345678	Abracadabra (CEOI22_abracadabra)	C++17	0 / 100	3030 ms	10868 KiB

Main

#include <bits/stdc++.h>

using namespace std;

const int nx=2e5+5;

int n, q, idx[nx], res[nx], t;
vector<int> v(nx), qrs[nx];

vector<int> shuffle(vector<int> x)
{
    vector<int> l, r, res;
    res.push_back(0);
    for (int i=n/2; i>=1; i--) l.push_back(v[i]);
    for (int i=n; i>n/2; i--) r.push_back(v[i]);
    while (l.size()!=0||r.size()!=0)
    {
        if (r.empty()) res.push_back(l.back()), l.pop_back();
        else if (l.empty()) res.push_back(r.back()), r.pop_back();
        else if (l.back()<r.back()) res.push_back(l.back()), l.pop_back();
        else res.push_back(r.back()), r.pop_back();
    }
    return res;
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>q;
    for (int i=1; i<=n; i++) cin>>v[i];
    for (int i=1; i<=q; i++) cin>>t>>idx[i], qrs[min(n, t)].push_back(i);
    for (int i=0; i<=n; i++) 
    {
        for (auto x:qrs[i]) res[x]=v[idx[x]];
        v=shuffle(v);
        //for (int j=1; j<=n; j++) cout<<v[j]<<' ';
        //cout<<'\n';
    }
    for (int i=1; i<=q; i++) cout<<res[i]<<'\n';
}

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