Submission #1063945

#	Time	Username	Problem	Language	Result	Execution time	Memory
1063945		thinknoexit	Mars (APIO22_mars)	C++17	0 / 100	1 ms	332 KiB

mars

#include "mars.h"
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
int di[4] = { 1, 0, -1, 0 }, dj[4] = { 0, 1, 0, -1 };
// n <= 2
string count_island(int n, vector<string> v) {
	vector<vector<bool>> vis(n, vector<bool>(n, false));
	function<void(int, int)> dfs;
	dfs = [&](int i, int j) {
		vis[i][j] = 1;
		for (int k = 0;k < 4;k++) {
			int ii = i + di[k], jj = j + dj[k];
			if (ii < 0 || jj < 0 || ii >= n || jj >= n) continue;
			if (vis[ii][jj] || v[ii][jj] == '0') continue;
			dfs(ii, jj);
		}
		};
	int cnt = 0;
	for (int i = 0;i < n;i++) {
		for (int j = 0;j < n;j++) {
			if (!vis[i][j] && v[i][j] == '1') {
				cnt++;
				dfs(i, j);
			}
		}
	}
	string s = string(100, '0');
	for (int j = 0;j < 10;j++) {
		s[j] = ((cnt >> j) & 1) + '0';
	}
	return s;
}
string process(vector<vector<string>> a, int i, int j, int k, int n) {
	if (n == 1) {
		vector<string> v(3, string(3, '0'));
		for (int i = 0;i < 3;i++) {
			for (int j = 0;j < 3;j++) {
				v[i][j] = a[i][j][0];
			}
		}
		return count_island(2 * n + 1, v);
	}
	if (k == 0) {
		string s = string(100, '0');
		int tot = 0;
		for (auto& x : a) {
			for (auto& y : x) {
				s[tot++] = y[0];
			}
		}
		return s;
	}
	vector<string> v(2 * n + 1, string(2 * n + 1, '0'));
	// a[0][0], a[0][2], a[2][0], a[2][2]
	for (int i = 0;i < 3;i++) {
		for (int j = 0;j < 3;j++) {
			v[i][j] = a[0][0][i * 3 + j];
			v[3 + i][j] = a[2][0][i * 3 + j];
			v[i][3 + j] = a[0][2][i * 3 + j];
			v[3 + i][3 + j] = a[2][2][i * 3 + j];
		}
	}
	return count_island(2 * n + 1, v);
}

• Subtask 1: 0 / 6
• Subtask 2: 0 / 8
• Subtask 3: 0 / 7
• Subtask 4: 0 / 8
• Subtask 5: 0 / 7
• Subtask 6: 0 / 8
• Subtask 7: 0 / 10
• Subtask 8: 0 / 24
• Subtask 9: 0 / 11
• Subtask 10: 0 / 11