제출 #957379

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
957379		12345678	버섯 세기 (IOI20_mushrooms)	C++17	80.43 / 100	6 ms	956 KiB

mushrooms

#include "mushrooms.h"
#include <bits/stdc++.h>

using namespace std;

int res, a, b, m, sz;
vector<int> x, y;

namespace SUB2
{
int count_mushrooms(int n) {
    int res=1;
    vector<int> qrs;
    for (int i=1; i<n; i+=2)
    {
        if (i==n-1) 
        {
            if (use_machine(vector<int> {0, i})==0) res++;
        }
        else
        {
            auto tmp=use_machine(vector<int> {0, i, i+1});
            if (tmp==2) res++;
            else if (tmp==0) res+=2;
            else
            {
                qrs.push_back(i+1);
                qrs.push_back(i);
            }
        }
    }
	if (qrs.size()>0)
    {
        res+=(use_machine(qrs)+1)/2;
    }
	return res;
}
}

int count_mushrooms(int n) {
    if (n<=282)
    {
        return SUB2::count_mushrooms(n);
    }
    x.push_back(0);
    if (use_machine(vector<int> {0, 1})==0) 
    {
        a=0, b=1, m=0;
        x.push_back(1);
        if (use_machine(vector<int> {1, 2})==0) x.push_back(2);
        else y.push_back(2);
    }
    else if (use_machine(vector<int> {1, 2})==0) a=1, b=2, m=1, y.push_back(1), y.push_back(2);
    else a=0, b=2, m=0, y.push_back(1), x.push_back(2);
    for (int i=3; i<282; i+=2)
    {
        int tmp=use_machine(vector<int> {a, i, b, i+1});
        if (m)
        {
            if (tmp==3) x.push_back(i), x.push_back(i+1);
            else if (tmp==2) x.push_back(i), y.push_back(i+1);
            else if (tmp==1) x.push_back(i+1), y.push_back(i);
            else y.push_back(i), y.push_back(i+1);
        }
        else
        {
            if (tmp==3) y.push_back(i), y.push_back(i+1);
            else if (tmp==2) y.push_back(i), x.push_back(i+1);
            else if (tmp==1) y.push_back(i+1), x.push_back(i);
            else x.push_back(i), x.push_back(i+1);
        }
    }
    res=x.size();
    if (x.size()>=y.size()) m=0, sz=x.size();
    else m=1, sz=y.size();
    /*
    cout<<"debug x : ";
    for (auto z:x) cout<<z<<' ';
    cout<<'\n';
    cout<<"debug y : ";
    for (auto z:y) cout<<z<<' ';
    cout<<'\n';
    */
    for (int i=283; i<n; i+=sz)
    {
        vector<int> qrs;
        int cnt=0;
        for (int j=0; j<sz; j++)
        {
            if (m) qrs.push_back(y[j]);
            else qrs.push_back(x[j]);
            if (i+j<n) qrs.push_back(i+j), cnt++;
        }
        int tmp=(use_machine(qrs)+1)/2;
        if (m) res+=tmp;
        else res+=cnt-tmp;
    }
	return res;
}

• Subtask 1: 80.427 / 100