Submission #750892

#	Time	Username	Problem	Language	Result	Execution time	Memory
750892		vjudge1	Carnival (CEOI14_carnival)	C++17	100 / 100	15 ms	208 KiB

carnival

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

const int NM = 150;

int N, a[NM+5], k, pos[NM+5];

int ask(int t, int i){
	cout << t+1 << ' ';
	for (int j = 1; j <= t; j++)
		cout << pos[j] << ' ';
	cout << i << endl;
	int res;
	cin >> res;
	return res;
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin >> N;
	a[k = 1] = 1;
	pos[1] = 1;
	for (int i = 2; i <= N; i++){
		int L = 1, R = k, j = -1;
		while (L <= R){
			int mid = (L+R)/2;
			if (ask(mid, i) == mid){
				j = mid;
				R = mid-1;
			}
			else L = mid+1;
		}
		if (j == -1){
			a[i] = ++k;
			pos[k] = i;
		}
		else{
			a[i] = j;
		}
	}
	cout << 0 << ' ';
	for (int i = 1; i <= N; i++)
		cout << a[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