Submission #908419

#	Time	Username	Problem	Language	Result	Execution time	Memory
908419		12345678	Carnival (CEOI14_carnival)	C++17	100 / 100	11 ms	720 KiB

carnival

#include <bits/stdc++.h>
 
using namespace std;
 
const int nx=155;
int n, ans[nx], res, cnt;
 
int query(vector<int> v)
{
    if (v.size()==1) return 1;
    cout<<v.size()<<' ';
    for (auto x:v) cout<<x<<' ';
    cout<<endl;
    cin>>res;
    return res;
}

int in(int idx, int l, int r)
{
    if (r<l) return 0;
    vector<int> qrs;
    for (int i=l; i<=r; i++) qrs.push_back(i);
    auto sv=query(qrs);
    qrs.push_back(idx);
    auto nw=query(qrs);
    return sv==nw;
}

int search(int idx, int l, int r)
{
    if (l==r) return l;
    int md=(l+r)/2;
    if (in(idx, l, md)) return search(idx, l, md);
    else return search(idx, md+1, r);
}
int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    for (int i=1; i<=n; i++)
    {
        if (!in(i, i+1, n)) 
        {
            if (ans[i]==0) ans[i]=++cnt;
        }
        else
        {
            int vl=search(i, i+1, n);
            if (!ans[i]) ans[i]=++cnt, ans[vl]=ans[i];
            else ans[vl]=ans[i];
        }
    }
    cout<<0<<' ';
    for (int i=1; i<=n; i++) cout<<ans[i]<<' ';
    return 0;
}

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20