Submission #1132806

#	Time	Username	Problem	Language	Result	Execution time	Memory
1132806		qrn	Carnival (CEOI14_carnival)	C++20	100 / 100	6 ms	468 KiB

carnival

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

#define SPEED ios_base::sync_with_stdio(0); cin.tie(NULL); cout.tie(NULL);
#define ALL(x) x.begin(), x.end()
#define intt long long
#define pb push_back
// #define endl "\n"

const int mod = 1e9 + 7, inf = 1e9;

intt interaction(vector<intt>asked) {
    cout << (intt)asked.size() << " ";
    for(intt i : asked) cout << i << " ";
    cout << endl;
    intt X;
    cin >> X;
    return X;
}

void solve() {
    intt N, uniqo = 2;
    cin >> N;
    vector<intt> ans(N + 1, 0ll), ask, memo(N + 1, 0ll);
    ans[1] = 1;
    ask.pb(1);
    memo[1] = 1;
    for(intt r = 2; r <= N; r++) {
        ask.pb(r);
        intt uniq = interaction(ask);
        memo[r] = uniq;
        if(uniq == memo[r - 1]) {
            // arxaya dogru binary search ataciq
            intt L = 1, R = r - 1, prevL = 0, prevR = 0;
            while(L < R) {
                if(prevL == L && prevR == R) break;
                intt mid = (L + R) / 2;
                vector<intt>sor;
                for(intt i = L; i <= mid; i++) sor.pb(i);
                intt prevcnt = interaction(sor);
                sor.pb(r);
                intt cnt = interaction(sor);
                
                prevL = L;
                prevR = R;
                if(cnt != prevcnt) {
                    L = mid;
                } else {
                    R = mid;
                }
            }
            ans[r] = ans[R];
        } else {
            ans[r] = uniq;
        }
    }
    cout << 0 << " ";
    for(intt i = 1; i <= N; i++) {
        cout << ans[i] << " ";
    }
    cout << endl;
}

int main() {
    SPEED;
    intt tst = 1;
    // cin >> tst;
    while (tst--) {
        solve();
    }
}

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