Submission #151951

#	Time	Username	Problem	Language	Result	Execution time	Memory
151951		forestryks	Carnival (CEOI14_carnival)	C++14	100 / 100	21 ms	504 KiB

carnival

#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using ld = long double;
using pii = pair<int, int>;
#define rep(i, n) for (int (i) = 0; (i) < (n); ++(i))
#define all(x) (x).begin(), (x).end()
#define FAST_IO ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define f first
#define s second

const int MAXN = 155;
int n;
int a[MAXN];
int cnt[MAXN][MAXN];

int ask(int l, int r) {
    cout << r - l + 1;
    for (int i = l; i <= r; ++i) {
        cout << ' ' << i + 1;
    }
    cout << endl;
    int x;
    cin >> x;
    return x;
}

int main() {
    FAST_IO;
    cin >> n;
    cnt[n - 1][n - 1] = 1;
    fill(a, a + n, -1);
    int last = 1;
    a[n - 1] = 0;
    for (int i = n - 2; i >= 0; --i) {
        int l = i, r = n;
        while (r - l > 1) {
            int m = l + (r - l) / 2;
            if (ask(i, m) == cnt[i + 1][m] + 1) {
                l = m;
            } else {
                r = m;
            }
        }

        if (r == n) a[i] = last++;
        else a[i] = a[r];

        // for (int j = i + 1; j < n; ++j) {
        //     int x = ask(i, j);
        //     if (x != cnt[i + 1][j] + 1) {
        //         a[i] = a[j];
        //         break;
        //     }
        // }
        // if (a[i] == -1) a[i] = last++;

        set<int> s;
        for (int j = i; j < n; ++j) {
            s.insert(a[j]);
            cnt[i][j] = s.size();
        }
    }

    cout << 0;
    rep(i, n) {
        cout << ' ' << a[i] + 1;
    }
    cout << endl;
}

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