제출 #721464

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
721464		vjudge1	버섯 세기 (IOI20_mushrooms)	C++17	0 / 100	4 ms	208 KiB

mushrooms

#include "mushrooms.h"
#include <bits/stdc++.h>
using namespace std;

#define N '\n';
#define VI <vector <int>>
#define VVI <vector <vector <int>>>  

int count_mushrooms(int n){
    int cnt = 1;    
    
    if(n <= 226){
        for(int i = 1; i < n; i++){
            cnt += 1 - use_machine({0, i});
        }
        return cnt;
    }

    vector <int> As = {0};
    vector <int> Bs;
    int unt = 10;
    for(int i = 1; i < unt; i++){
        bool q = use_machine({0,i});
        if(q)
            Bs.push_back(i);
        else
            As.push_back(i);
    }
    cnt += As.size()-1;

    if(As.size() >= Bs.size()){
        int i = unt;
        for(; i < n;){
            vector<int> search;
            int j = 0;
            for(; j < As.size() && i < n; j++, i++){
                search.push_back(i);
                search.push_back(As[j]);
            }
            int q = use_machine(search);
            cnt +=  (j + 1) - ((q/2) + q % 2);
        }
    }
    else{
        int i = unt;
        for(; i < n; ){
            vector<int> search;
            for(int j = 0; j < Bs.size() && i < n; j++, i++){
                search.push_back(i);
                search.push_back(Bs[j]);
            }

            int q = use_machine(search);
            cnt +=  q/2 + q % 2;
        }   
    }
    // B A B A B A
    // B A A A B A B A
    return cnt;
}

컴파일 시 표준 에러 (stderr) 메시지

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:36:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |             for(; j < As.size() && i < n; j++, i++){
      |                   ~~^~~~~~~~~~~
mushrooms.cpp:48:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |             for(int j = 0; j < Bs.size() && i < n; j++, i++){
      |                            ~~^~~~~~~~~~~

• Subtask 1: 0 / 100