Submission #1040046

#	Time	Username	Problem	Language	Result	Execution time	Memory
1040046		vjudge1	Carnival (CEOI14_carnival)	C++17	100 / 100	6 ms	460 KiB

carnival

#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define ld long double
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pld pair<ld, ld>
#define pb push_back
#define fi first
#define se second
#define debug(x) cerr << #x << " => " << x << endl
#define all(x) x.begin(),x.end()

int ans[155];

int ask(int x,int y)
{
	cout<<y-x+1<<' ';
	for(int i=x;i<=y;i++) cout<<i<<' ';
	cout<<endl;
	int a;cin>>a;
	return a;
}

int sz(int x,int y)
{
	set<int> s;
	for(int i=x;i<=y;i++) s.insert(ans[i]);
	return s.size();
}

int main()
{
	ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
	int n;cin>>n;
	ans[1]=1;
	for(int i=2;i<=n;i++)
	{
		int a=sz(1,i-1);
		int b=ask(1,i);
		if(a!=b)
		{
			ans[i]=b;
			continue;
		}
		int l=1,r=i-1,id=1;
		while(l<=r)
		{
			int mid=(l+r)/2;
			int x=sz(mid,i-1);
			int y=ask(mid,i);
			if(x==y) l=mid+1,id=mid;
			else r=mid-1;
		}
		ans[i]=ans[id];
	}
	cout<<0<<' ';
	for(int i=1;i<=n;i++) cout<<ans[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