Submission #731108

#	Time	Username	Problem	Language	Result	Execution time	Memory
731108		hoainiem	Mars (APIO22_mars)	C++17	29 / 100	288 ms	25644 KiB

mars

#include "mars.h"
#include <bits/stdc++.h>
#define fi first
#define se second
using namespace std;
typedef pair<int, int> pii;
int get(int i, int j, int n){
    i /= 2;
    j /= 2;
    n = n / 2 + (n & 1);
    return i * n + j;
}
string operator|(string x, string y){
    for (int i = 0; i < 100; i++)
        if (y[i] == '1')
            x[i] = y[i];
    return x;
}
std::string process(std::vector <std::vector<std::string>> a, int x, int y, int k, int n){
    if (!k)
        for (int i = 0; i < 3; i++)
            for (int j = 0; j < 3; j++)
                if (a[i][j][0] == '1'){
                    a[i][j][0] = '0';
                    a[i][j][get(x + i, y + j, n * 2 + 1)] = '1';
                }
    a[0][0] = a[0][0] | a[2][0] | a[0][2] | a[2][2];
    if (k < n - 1)
        return a[0][0];
    n = n * 2 + 1;
    a[0][1] = a[0][1] | a[2][1];
    a[1][0] = a[1][0] | a[1][2];
    bitset<1608>land[1608];
    int h1[4]{1, -1, 0, 0};
    int h2[4]{0, 0, 1, -1};
    bool vis[1608][1608];
    for (int i = 0; i < n; i++)
        land[i].reset();
    for (x = 0; x < 2; x++)
        for (int y = 0; y < 2; y++)
            for (int i = x; i < n; i += 2)
                for (int j = y; j < n; j += 2)
                    if (a[x][y][get(i, j, n)] == '1')
                        land[i].set(j);
    memset(vis, false, sizeof(vis));
    queue<pii>s;
    int ans = 0;
    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
            if (!vis[i][j] && land[i].test(j)){
                ans++;
                s.push({i, j});
                vis[i][j] = true;
                while (!s.empty()){
                    pii u = s.front();
                    s.pop();
                    for (int c = 0; c < 4; c++){
                        pii v = {u.fi + h1[c], u.se + h2[c]};
                        if (v.fi < 0 || v.fi >= n || v.se < 0 || v.se >= n || !land[v.fi].test(v.se) || vis[v.fi][v.se])
                            continue;
                        s.push(v);
                        vis[v.fi][v.se] = true;
                    }
                }
            }
    string res;
    res.resize(100, '0');
    for (int i = 0; i < 15; i++)
        if ((ans >> i) & 1)
            res[i] = '1';
    return res;
}

• Subtask 1: 6 / 6
• Subtask 2: 8 / 8
• Subtask 3: 7 / 7
• Subtask 4: 8 / 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