Submission #1226266

#	Time	Username	Problem	Language	Result	Execution time	Memory
1226266		maomao	Carnival (CEOI14_carnival)	C++20	0 / 100	2 ms	408 KiB

carnival

#include <iostream>
#include <vector>
using namespace std;
#define pb push_back
bool query(vector<int>& v, int l, int r, int i) {
	int sz = r-l+2;
	cout << sz << ' ';
	for(int k = l; k<=r; k++) cout << v[k] << ' ';
	cout << i << endl;
	cout << flush;
	
	int rep; cin >> rep;
	return (rep==sz); //if true: i is a new type
}

int main() {
	int n; cin >> n;
	int c = 1;
	int ans[n+1];
	ans [0] = 0; ans[1] = 1;
	vector<int> v = {1};
	for(int i = 2; i <= n; i++) {
		int l = 0, r = v.size() - 1;
		if(query(v, l, r, i)) {
			c++;
			ans[i] = c;
			v.pb(i);
			continue;
		}
		while(l < r) {
			int mid = (l+r)/2;
			if(query(v, l, mid, i)) l = mid+1;
			else r = mid;

		}
		ans[i] = ans[l];
	}
	
	for(int k : ans) cout << k << ' ';
	cout << endl << flush;
	return 0;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20