Submission #1213489

#	Time	Username	Problem	Language	Result	Execution time	Memory
1213489		stefanneagu	Carnival (CEOI14_carnival)	C++20	0 / 100	0 ms	428 KiB

carnival

#include <bits/stdc++.h>
#define int long long

using namespace std;

const int nmax = 5e5 + 1, inf = 1e9;

int col[nmax];

int qry(vector<int> v) {
    cout << v.size() << " ";
    for (auto it : v) {
        cout << it << " ";
    }
    cout << endl;
    int a;
    cin >> a;
    return a;
}

vector<int> get_pref(vector<int> v, int nr, int xtra) {
    vector<int> g = {xtra};
    for (int i = 0; i <= nr; i++) {
        g.push_back(v[i]);
    }
    return g;
}

int32_t main() {
    int n;
    cin >> n;
    vector<int> dif = {1};
    for (int i = 2; i <= n; i++) {
        int l = 0, r = dif.size() - 1, ans = -1;
        while (l <= r) {
            int mid = (l + r) / 2;
            if (qry(get_pref(dif, mid, i)) < mid + 1) {
                ans = mid;
                r = mid - 1;
            } else {
                l = mid + 1;
            }
        }
        if (ans == -1) {
            cout << "!" << i << '\n';
            col[i] = dif.size();
            dif.push_back(i);
        } else {
            col[i] = col[dif[ans]];
        }
    }
    cout << "0 ";
    for (int i = 1; i <= n; i++) {
        cout << col[i] + 1 << " ";
    }
    cout << endl;
    return 0;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20