Submission #630718

#	Time	Username	Problem	Language	Result	Execution time	Memory
630718		jwvg0425	Prisoner Challenge (IOI22_prison)	C++17	5 / 100	12 ms	10324 KiB

prison

#include <stdio.h>
#include <vector>
#include <queue>
#include <algorithm>
#include <iostream>
#include <string>
#include <bitset>
#include <map>
#include <set>
#include <tuple>
#include <string.h>
#include <math.h>
#include <random>
#include <functional>
#include <assert.h>
#include <math.h>
#define all(x) (x).begin(), (x).end()
#define xx first
#define yy second

using namespace std;

template<typename T, typename Pr = less<T>>
using pq = priority_queue<T, vector<T>, Pr>;
using i64 = long long int;
using ii = pair<int, int>;
using ii64 = pair<i64, i64>;

void dfs(vector<vector<int>>& res, int n, int now, int turn, int l, int r)
{
	int other = (turn + 1) % 2;

	int lx = l + 1;
	int rx = r - 1;
	int m = (lx + rx) / 2;

	res[now][0] = turn;

	int lo = res.size();
	int hi = res.size() + 1;

	for (int i = 1; i <= n; i++)
	{
		if (i <= l)
		{
			res[now][i] = -(turn + 1);
			continue;
		}
		
		if (i >= r)
		{
			res[now][i] = -(other + 1);
			continue;
		}

		if (i <= m)
		{
			res[now][i] = lo;
			continue;
		}

		res[now][i] = hi;
	}

	if (lx > rx)
		return;

	res.push_back(vector<int>(n + 1, 0));
	if (m + 1 <= rx)
		res.push_back(vector<int>(n + 1, 0));
	dfs(res, n, lo, (turn + 1) % 2, lx, m);

	if (m + 1 <= rx)
		dfs(res, n, hi, (turn + 1) % 2, m + 1, rx);
}

vector<vector<int>> devise_strategy(int N)
{
	vector<vector<int>> res;
	res.push_back(vector<int>(N + 1, 0));
	dfs(res, N, 0, 0, 1, N);

	return res;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 5
• Subtask 3: 0 / 90