Submission #1253926

#	Time	Username	Problem	Language	Result	Execution time	Memory
1253926		nikaa123	Carnival (CEOI14_carnival)	C++20	100 / 100	2 ms	436 KiB

carnival

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

// #define int long long
#define eb emplace_back
#define mp make_pair
#define pb push_back
#define pp pop_back
#define endl '\n'
#define ff first
#define ss second
#define stop exit(0)
#define sz(x) (int)x.size()
#define pause system("pause")
#define all(x) (x).begin(), (x).end()
#define deb(x) cout << #x << "-" << x << endl

typedef char chr;
typedef string str;
typedef long long ll;
typedef vector<int> vii;
typedef pair<int, int> pii;

const long long INF = LLONG_MAX;
const int inf = INT_MAX;
const int mod = 998244353;
const int MOD = 1e9 + 7;
const int dx[] = {0, 0, -1, 1};
const int dy[] = {-1, 1, 0, 0};
const double PI = 2 * acos(0.0);

const int N = 15e1 + 5;

int n,c;
int ans[N];
vector <int> v;

int ask(vector <int> v) {
    cout << sz(v) << " ";
    for (auto x:v) {
        cout << x << " ";
    }
    cout << endl;
    cout.flush();
    int x;
    cin >> x;
    return x;
}

bool check(int mid, int x) {

    vii v1;
    for (int i = 0; i <= mid; i++) {
        v1.pb(v[i]);
    }
    v1.pb(x);
    return (ask(v1) == mid+1);

}

inline void test_case() {

    cin >> n;
    for (int i = 1; i <= n; i++) {
        v.pb(i);
        if (ask(v) > c) {
            c++;
        } else {
            v.pp();
        }
    }

    for (int i = 1; i <= n; i++) {
        ans[i] = -1;
    }
    for (int i = 0; i < sz(v); i++) {
        ans[v[i]] = i+1;
    }
    for (int i = 1; i <= n; i++) {
        if (ans[i] != -1) continue;
        // deb(i);
        int l = 0; int r = sz(v)-1;
        while (l <= r) {
            int mid = (l+r)/2;
            if (check(mid,i)) {
                ans[i] = mid+1;
                r = mid - 1;
            } else {
                l = mid + 1;
            }
        }
    }
    
    cout << 0 << " ";
    for (int i = 1; i <= n; i++) {
        cout << ans[i] << " ";
    }
    cout << endl;
    cout.flush();
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);

    int T = 1;
    // cin >> T;
    while (T--) {
        test_case();
    }
    return 0;
}

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