Submission #305791

#	Time	Username	Problem	Language	Result	Execution time	Memory
305791		myungwoo	Counting Mushrooms (IOI20_mushrooms)	C++17	0 / 100	1 ms	256 KiB

mushrooms

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

int count_mushrooms(int n)
{
	vector <int> arr[2];
	arr[0] = {0};
	for (int i=1;i<n;i++){
		if (i+1 < n && arr[0].size() > 1){
			int res = use_machine({arr[0][0], i, arr[0][1], i+1});
			arr[(res&2)>>1^1].push_back(i);
			arr[res&1^1].push_back(++i);
		}else if (i+1 < n && arr[1].size() > 1){
			int res = use_machine({arr[1][0], i, arr[1][1], i+1});
			arr[(res&2)>>1].push_back(i);
			arr[res&1].push_back(++i);
		}
		else arr[use_machine({0, i})].push_back(i);
	}
	return arr[0].size();
}

Compilation message (stderr)

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:13:11: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   13 |    arr[res&1^1].push_back(++i);
      |        ~~~^~

• Subtask 1: 0 / 100