Submission #605253

#	Time	Username	Problem	Language	Result	Execution time	Memory
605253		Tigryonochekk	Counting Mushrooms (IOI20_mushrooms)	C++17	0 / 100	1 ms	208 KiB

mushrooms

#include <iostream>
#include "mushrooms.h"
#include <vector>
#define ll long long
using namespace std;

int n;
vector<int> a = { 0 }, b;
int ans = 1;

void execA(int s, int t) {
	if (s == t) return;
	int c = a.size();
	vector<int> m;
	int j = 0;
	for (int i = s; i < t; i++) {
		m.push_back(a[j]);
		m.push_back(i);
		j++;
	}
	int k = use_machine(m);
	if (k % 2 == 0) {
		b.push_back(m.back());
	}
	else {
		a.push_back(m.back());
	}
	ans += t - s - k / 2;
}

void execB(int s, int t) {
	if (s == t) return;
	int c = b.size();
	vector<int> m;
	int j = 0;
	for (int i = s; i < t; i++) {
		m.push_back(b[j]);
		m.push_back(i);
		j++;
	}
	int k = use_machine(m);
	if (k % 2 == 1) {
		b.push_back(m.back());
	}
	else {
		a.push_back(m.back());
	}
	ans += k / 2;
}

int count_mushrooms(int nigga) {
	n = nigga;
	if (n <= 450) {
		for (int i = 1; i < n - 1; i += 2) {
			ans += 2 - use_machine({ i, 0, i + 1 });
		}
		if (n % 2 == 0) {
			ans += 1 - use_machine({ n - 1, 0 });
		}
		return ans;
	}
	int x = 160;
	for (int i = 1; i < x; i += 2) {
		int u = use_machine({ 0, i, 0, i + 1 });
		if (u == 0) {
			a.push_back(i);
			a.push_back(i + 1);
			ans += 2;
		}
		else if(u == 1){
			b.push_back(i);
			a.push_back(i + 1);
			ans++;
		}
		else if (u == 2) {
			a.push_back(i);
			b.push_back(i + 1);
			ans++;
		}
		else {
			b.push_back(i);
			b.push_back(i + 1);
		}
	}
	int s = x;
	while (s < n) {
		if (a.size() >= b.size()) {
			int t = min(n, s + (int)a.size());
			execA(s, t);
			s = t;
		}
		else {
			int t = min(n, s + (int)b.size());
			execB(s, t);
			s = t;
		}
	}
	return ans;
}

/*


*/

Compilation message (stderr)

mushrooms.cpp: In function 'void execA(int, int)':
mushrooms.cpp:13:6: warning: unused variable 'c' [-Wunused-variable]
   13 |  int c = a.size();
      |      ^
mushrooms.cpp: In function 'void execB(int, int)':
mushrooms.cpp:33:6: warning: unused variable 'c' [-Wunused-variable]
   33 |  int c = b.size();
      |      ^

• Subtask 1: 0 / 100