Submission #596610

#	Time	Username	Problem	Language	Result	Execution time	Memory
596610		Temmie	Vision Program (IOI19_vision)	C++17	44 / 100	970 ms	9904 KiB

vision

#include "vision.h"
#include <bits/stdc++.h>

struct Case {
	int i, j;
	std::vector <std::pair <int, int>> can;
};

constexpr const int di[4] = { 1, -1, 0, 0 };
constexpr const int dj[4] = { 0, 0, 1, -1 };

constexpr bool ok(int i, int j, int n, int m) {
	return i >= 0 && j >= 0 && i < n && j < m;
}

std::vector <std::pair <int, int>> get(int n, int m, int k, int si, int sj) {
	std::vector <std::pair <int, int>> res;
	std::queue <std::pair <int, std::pair <int, int>>> q;
	std::vector <std::vector <bool>> vis(n, std::vector <bool> (m, false));
	q.push({ 0, { si, sj } });
	while (q.size()) {
		int w = q.front().first;
		int i = q.front().second.first;
		int j = q.front().second.second;
		q.pop();
		if (!ok(i, j, n, m) || vis[i][j]) {
			continue;
		}
		vis[i][j] = true;
		if (w == k) {
			res.emplace_back(i, j);
		}
		if (w < k) {
			for (int d = 0; d < 4; d++) {
				q.push({ w + 1, { i + di[d], j + dj[d] } });
			}
		}
	}
	return res;
}

std::vector <int> conv(int m, const std::vector <std::pair <int, int>>& a) {
	std::vector <int> res(a.size());
	for (int i = 0; i < (int) a.size(); i++) {
		res[i] = a[i].first * m + a[i].second;
	}
	return res;
}

void construct_network(int n, int m, int k) {
	std::vector <std::vector <Case>> cas(n, std::vector <Case> (m));
	std::vector <int> or_last;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			cas[i][j].i = i;
			cas[i][j].j = j;
			cas[i][j].can = get(n, m, k, i, j);
			if (cas[i][j].can.empty()) {
				continue;
			}
			int ind1 = add_or(conv(m, cas[i][j].can));
			int ind2 = add_and({ ind1 , i * m + j });
			or_last.push_back(ind2);
		}
	}
	assert(or_last.size());
	add_or(or_last);
}

• Subtask 1: 10 / 10
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 0 / 15
• Subtask 5: 12 / 12
• Subtask 6: 0 / 8
• Subtask 7: 0 / 14
• Subtask 8: 0 / 19