Submission #500595

#	Time	Username	Problem	Language	Result	Execution time	Memory
500595		REALITYNB	Carnival (CEOI14_carnival)	C++17	100 / 100	19 ms	304 KiB

carnival

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

int main() {
	int n; 
	cin>>n; 
	vector<vector<int>> a={{1}}; 
	for(int i=2;i<=n;i++){
		int l=-1,r=a.size(); 
		while(r-l!=1){
			int md=(r+l)/2; 
			vector<int> ask={i}; 
			for(int j=0;j<=md;j++) 
				for(int x : a[j])
					ask.push_back(x); 
			cout << ask.size() << " " ; 
			for(int y : ask)
				cout << y << " " ;
			cout << endl ; 
			int answer ; 
			cin>>answer; 
			if(answer==md+1) 
				r=md; 
			else
				l=md;
		}
		vector<int> nw = {i};
		if(r==a.size())
			a.pb(nw); 
		else
			a[r].pb(i); 
	}
	cout << 0 << " " ; 
	vector<int> answer(n+1); 
	for(int i=0;i<a.size();i++)
		for(int x : a[i])
			answer[x]=i+1;
	for(int i=1;i<=n;i++)
		cout << answer[i] << " " ; 
	return 0;
}

Compilation message (stderr)

carnival.cpp: In function 'int main()':
carnival.cpp:29:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |   if(r==a.size())
      |      ~^~~~~~~~~~
carnival.cpp:36:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |  for(int i=0;i<a.size();i++)
      |              ~^~~~~~~~~

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