제출 #423893

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
423893		Mohammed_Atalah	버섯 세기 (IOI20_mushrooms)	C++17	0 / 100	1 ms	200 KiB

mushrooms

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


int count_mushrooms(int n) {

	vector<int> indices;
	for (int i = 0; i < n; i++) {
		indices.push_back(i);
	}


	if (use_machine(indices) == 0) {
		return n;
	}

	int bs = 0;
	int as = 0;
	vector<int> a;
	vector<int> b;
	int last_index;
	for (int i = 1; i < n; i += 2) {
		if (a.size() == 20 || b.size() == 20) {
			last_index = i + 1;
			break;
		}
		if (i + 1 == n) {
			std::vector<int> v;
			v.push_back(0);
			v.push_back(i);
			if (use_machine(v) == 1) {
				bs++;
			} else {
				as++;
			}
			continue;
		}


		std::vector<int> v;
		v.push_back(i);
		v.push_back(0);
		v.push_back(i + 1);

		int r = use_machine(v);
		bs += r;
		as += 2 - r;
		if (r == 2) {
			b.push_back(i);
			b.push_back(i + 1);
		} else if (r == 0) {
			a.push_back(i);
			a.push_back(i + 1);
		}
	}


	if (a.size() != 20 && b.size() != 20) {
		return n - bs;
	}
	int remain = n - last_index;


	if (a.size() == 20) {
		while (remain > 0) {
			if (remain >= 19) {
				vector<int> v;
				v.push_back(a[0]);
				for (int i = 1; i < 20; i++) {
					v.push_back(last_index);
					v.push_back(a[i]);
					last_index++;
				}
				bs += use_machine(v) / 2;
				remain -= 19;
			} else {
				vector<int> v;
				v.push_back(a[0]);
				for (int i = 1; i < remain + 1; i++) {
					v.push_back(last_index);
					v.push_back(a[i]);
					last_index++;
				}
				bs += use_machine(v) / 2;
				remain -= remain;
			}
		}
		return n - bs;
	} else {

		while (remain > 0) {
			if (remain >= 19) {
				vector<int> v;
				v.push_back(b[0]);
				for (int i = 1; i < 20; i++) {
					v.push_back(last_index);
					v.push_back(b[i]);
					last_index++;
				}
				as += use_machine(v) / 2;
				remain -= 19;
			} else {
				vector<int> v;
				v.push_back(b[0]);
				for (int i = 1; i < remain + 1; i++) {
					v.push_back(last_index);
					v.push_back(b[i]);
					last_index++;
				}
				as += use_machine(v) / 2;
				remain -= remain;
			}
		}
		return as;
	}






}

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