Submission #1052188

#	Time	Username	Problem	Language	Result	Execution time	Memory
1052188		mychecksedad	Counting Mushrooms (IOI20_mushrooms)	C++17	80.71 / 100	5 ms	856 KiB

mushrooms

#include "mushrooms.h"
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define pii pair<int,int>
#define ff first
#define ss second


int count_mushrooms(int n) {
	vector<int> A, B;
	A.pb(0);
	int last = 1, add = 0;
	while(last < n){
		if(A.size() > B.size()){
			vector<int> q;
			int s = A.size();
			for(int j = last; j < min(n, last + s); ++j){
				q.pb(j);
				q.pb(A[j - last]);
			}
			last = min(n, last + s);
			int f = use_machine(q);
			s = q.size()/2 - 1;
			add += s - f/2;
			if(f%2==0) A.pb(q[0]);
			else B.pb(q[0]);
		}else{
			vector<int> q;
			int s = B.size();
			for(int j = last; j < min(n, last + s); ++j){
				q.pb(j);
				q.pb(B[j - last]);
			}
			int f = use_machine(q);
			add += f/2;
			if(f%2==1) A.pb(q[0]);
			else B.pb(q[0]);

			last = min(n, last + s);
		}
	}


	return int(A.size()) + add;
}

• Subtask 1: 80.7143 / 100