Submission #315643

#	Time	Username	Problem	Language	Result	Execution time	Memory
315643		Sorting	Counting Mushrooms (IOI20_mushrooms)	C++17	0 / 100	3 ms	256 KiB

mushrooms

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

using namespace std;

const int C = 200;

int count_mushrooms(int n){
    int cnt = 1;
    vector<int> a{0}, b;

    for(int i = 1; i < min(n, C + 1); ++i){
        if(!use_machine(vector<int>{0, i})){
            cnt++;
            a.push_back(i);
        }
        else b.push_back(i);
    }

    for(int i = min(n, C); i < n; i += (C / 2)){
        vector<int> v;
        int x = min(C / 2, n - i);
        if(a.size() > b.size()){
            for(int j = 0; j < x; ++j){
                v.push_back(a[j]);
                v.push_back(i + j);
            }
            v.push_back(a[x]);
        }
        else{
            for(int j = 0; j < x; ++j){
                v.push_back(b[j]);
                v.push_back(i + j);
            }
            v.push_back(b[x]);
        }

        int t = use_machine(v);
        if(a.size() > b.size()) cnt += x - t / 2;
        else cnt += t / 2;
    }

    return cnt;
}

• Subtask 1: 0 / 100