Submission #1206246

#	Time	Username	Problem	Language	Result	Execution time	Memory
1206246		tkm_algorithms	Counting Mushrooms (IOI20_mushrooms)	C++20	25 / 100	27 ms	444 KiB

mushrooms

/**
*    In the name of Allah
*    We are nothing and you're everything
**/
#include <bits/stdc++.h>
#include "mushrooms.h"
using namespace std;
using ll = long long;

#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
//#define int long long

const char nl = '\n';

//string s;
//int use_machine(vector<int> x) {
	//int cnt = 0;
	//for (int i = 1; i < sz(x); ++i)if (s[x[i]] != s[x[i-1]])cnt += 1;
	//return cnt;
//}

int count_mushrooms(int n) {
	int k = 1, res = 1;
	vector<int> a(1), b;
	int i = 1;
	while (i < n) {
		int mn = min(n-i, k);
		vector<int> x;
		if (sz(a) >= sz(b))
			for (int j = 0; j < mn; ++j) {
				x.push_back(j+i);
				x.push_back(a[j]);
			}
		else 
			for (int j = 0; j < mn; ++j) {
				x.push_back(j+i);
				x.push_back(b[j]);
			}
		int cnt = use_machine(x);
		if (sz(a) >= sz(b))res += mn-(cnt+1)/2;
		else res += (cnt+1)/2;
		int onki = k;
		if (cnt&1) {
			if (sz(a) >= sz(b))b.push_back(i);
			else a.push_back(i);
			k = max(sz(a), sz(b));
		}
		i += onki;
	}
	return res;
}

//int main() {
	//cin >> s;
	//cout << count_mushrooms(sz(s));
//}

• Subtask 1: 25 / 100