Submission #1113935

#	Time	Username	Problem	Language	Result	Execution time	Memory
1113935		Dan4Life	Carnival (CEOI14_carnival)	C++17	100 / 100	16 ms	616 KiB

carnival

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) begin(a),end(a)
using vi = vector<int>;
int n, col[300];

int query(vi v){
	cout << sz(v) << " ";
	for(auto u : v) cout << u << " ";
	cout << endl;
	int x; cin >> x; return x;
}

int main(){
	cin >> n; vi v, w; v.pb(1);
	for(int i = 2; i <= n; i++){
		v.pb(i);
		if(query(v)!=sz(v)) v.pop_back(),w.pb(i);
	} 
	for(int i = 0; i < sz(v); i++) col[v[i]]=i+1;
	for(auto u : w){
		int l = 0, r = sz(v)-1;
		while(l<r){
			int mid = (l+r)/2;
			vi x; x.clear();
			for(int i = 0; i <= mid; i++) x.pb(v[i]);
			x.pb(u);
			if(query(x) == sz(x)) l=mid+1;
			else r=mid;
		}
		col[u] = col[v[l]];
	}
	cout << 0 << " ";
	for(int i = 1; i <= n; i++) cout << col[i] << " ";
	cout << endl;
}

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