Submission #1051480

#	Time	Username	Problem	Language	Result	Execution time	Memory
1051480		Pacybwoah	How to Avoid Disqualification in 75 Easy Steps (CEOI23_avoid)	C++17	0 / 100	1 ms	600 KiB

avoid

#include "avoid.h"
#include <vector>
#include<algorithm>
#include<random>
#include<chrono>
#include<utility>
#include<cassert>
using namespace std;
auto seed = chrono::high_resolution_clock::now().time_since_epoch().count();
mt19937 mt(seed);
// send(), wait()
std::pair<int, int> scout(int R, int H) {
    vector<int> vec(1000);
    for(int i = 0; i < 1000; i++) vec[i] = i + 1;
    vector<bool> poss(1001, 1);
    int now = 0;
    vector<vector<int>> asked;
    while(now <= R - 40){
        now += 5;
        shuffle(vec.begin(), vec.end(), mt);
        vector<int> ask1, ask2;
        for(int i = 0; i < 200; i++) ask1.push_back(vec[i]);
        for(int i = 0; i < 200; i++) ask2.push_back(vec[i + 200]);
        send(ask1);
        send(ask2);
        asked.push_back(ask1);
        asked.push_back(ask2);
        vector<int>().swap(ask1);
        vector<int>().swap(ask2);
        for(int i = 0; i < 200; i++) ask1.push_back(vec[i + 400]);
        for(int i = 0; i < 200; i++) ask2.push_back(vec[i + 600]);
        send(ask1);
        send(ask2);
        asked.push_back(ask1);
        asked.push_back(ask2);
        vector<int>().swap(ask1);
        for(int i = 0; i < 200; i++) ask1.push_back(vec[i + 800]);
        send(ask1);
        asked.push_back(ask1);
    }
    auto res = wait();
    int sz = res.size();
    for(int i = 0; i < sz; i++){
        if(res[i] == 0){
            for(auto &x: asked[i]) poss[x] = 0;
        }
    }
    pair<int, int> ans;
    vector<int> anss;
    for(int i = 1; i <= 1000; i++) if(poss[i]) anss.push_back(i);
    //assert(anss.size() <= 2);
    if(anss.size() == 1) ans.first = anss[0], ans.second = anss[0];
    else ans.first = anss[1], ans.second = anss[0];
    return ans;
}
// g++ -std=c++17 -o run ceoi23_d2C_grader.cpp ceoi23_d2C.cpp -fsanitize=undefined -fsanitize=address -Wall -Wextra -Wshadow

• Subtask 0: 0 / 0
• Subtask 1: 0 / 10
• Subtask 2: 0 / 5
• Subtask 3: 0 / 10
• Subtask 4: 0 / 75