Submission #977619

#	Time	Username	Problem	Language	Result	Execution time	Memory
977619		CSQ31	Toxic Gene (NOI23_toxic)	C++17	30.47 / 100	9 ms	600 KiB

toxic

#include "toxic.h"
#include<bits/stdc++.h>
using namespace std;
vector<int>tox;
#define sz(a) (int)(a.size())
mt19937 seed(chrono::high_resolution_clock::now().time_since_epoch().count());
void find_toxic(vector<int>v){
    //for(int x:v)cout<<x<<" ";
   //cout<<'\n';
    if(sz(v) == 1){
        //cout<<v[0]<<'\n';
        answer_type(v[0],'T');
        tox.push_back(v[0]);
        return;
    }
	if(sz(tox) == 30){
        for(int x:v)answer_type(x,'R');
        return;
    }
    int m = sz(v)/2;
    vector<int>a,b;
    for(int i=0;i<m;i++)a.push_back(v[i]);
    for(int i=m;i<sz(v);i++)b.push_back(v[i]);

    int res = query_sample(a);
    if(res == sz(a)){ for(int x:a)answer_type(x,'R');}
    else find_toxic(a);

    res = query_sample(b);
    if(res == sz(b)){ for(int x:b)answer_type(x,'R');}
    else find_toxic(b);
}
void determine_type(int n){
	vector<int>p;
	for(int i=1;i<=n;i++)p.push_back(i);
	shuffle(p.begin(),p.end(),seed);

    tox.clear();
    vector<int>notoxic;
	vector<int>u;
    for(int i=1;i<=n;i+=8){
        vector<int>v;
        for(int j=0;j<8;j++){
            if(i+j > n)break;
            for(int k=0;k<(1<<j);k++)v.push_back(p[i+j-1]);
        }
        //for(int x:v)cout<<x<<" ";
       //cout<<'\n';
        int res = query_sample(v);
        //cout<<res<<'\n';
        if(res == sz(v)){
            for(int j=0;j<8;j++){
                if(i+j > n)break;
                notoxic.push_back(p[i+j-1]);
            }
        }else{
            for(int j=0;j<8;j++){
                if(i+j > n)break;
                if(res & (1<<j))answer_type(p[i+j-1],'S');
                else u.push_back(p[i+j-1]);
            }
           // for(int x:u)cout<<x<<" ";
            //cout<<'\n';
            //cout<<"TES"<<'\n';
        }
		if(sz(u) >= 16){
			find_toxic(u);
			u.clear();
		}
    }
	if(!u.empty())find_toxic(u);
    //for(int x:tox)cout<<x<<" ";
    //cout<<'\n';
    //for(int x:notoxic)cout<<x<<" ";
    //cout<<'\n';
    for(int i=0;i<sz(notoxic);i+=8){
        vector<int>v;
        for(int j=0;j<8;j++){
            if(i+j >= sz(notoxic))break;
            for(int k=0;k<(1<<j);k++)v.push_back(notoxic[i+j]);

        }
        v.push_back(tox[0]);
        int res = query_sample(v);
        for(int j=0;j<8;j++){
            if(i+j >= sz(notoxic))break;
            if(res & (1<<j))answer_type(notoxic[i+j],'S');
            else answer_type(notoxic[i+j],'R');
        }
    }

}

• Subtask 1: 30.47058824 / 100