Submission #540395

#	Time	Username	Problem	Language	Result	Execution time	Memory
540395		alextodoran	Carnival (CEOI14_carnival)	C++17	100 / 100	29 ms	336 KiB

carnival

/**
 ____ ____ ____ ____ ____
||a |||t |||o |||d |||o ||
||__|||__|||__|||__|||__||
|/__\|/__\|/__\|/__\|/__\|

**/

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N_MAX = 150;

int ask (vector <int> v) {
    if ((int) v.size() <= 1) {
        return (int) v.size();
    }
    cout << (int) v.size() << " ";
    for (int i : v) {
        cout << i << " ";
    }
    cout << endl;
    int resp;
    cin >> resp;
    return resp;
}

int N;
int C[N_MAX + 2];

bool isNew (int l, int r) {
    vector <int> v;
    for (int i = l; i < r; i++) {
        v.push_back(i);
    }
    int without = ask(v);
    v.push_back(r);
    int with = ask(v);
    return (without < with);
}

int main () {
    cin >> N;

    int k = 0;
    for (int i = 1; i <= N; i++) {
        // find the first equal to the left
        int l = 0, r = i - 1;
        while (l < r) {
            int mid = (l + r + 1) / 2;
            if (isNew(mid, i) == true) {
                r = mid - 1;
            } else {
                l = mid;
            }
        }
        C[i] = (l > 0 ? C[l] : ++k);
    }
    cout << 0 << " ";
    for (int i = 1; i <= N; i++) {
        cout << C[i] << " ";
    }
    cout << endl;

    return 0;
}

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