제출 #899197

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
899197		Blagoj	Emacs (COCI20_emacs)	C++17	50 / 50	0 ms	348 KiB

emacs

#include <bits/stdc++.h>

using namespace std;

#define endl '\n'
#define ll long long
#define all(x) (x).begin(), (x).end()

const int dx[] = {-1, 1, 0, 0}, dy[] = {0, 0, -1, 1};

int n, m;

bool valid(int x, int y) {
    return (x >= 0 && x < n && y >= 0 && y < m);
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> m;
    vector<string> v(n);
    for (int i = 0; i < n; i++) cin >> v[i];
    bool visited[n][m];
    memset(visited, 0, sizeof(visited));
    int ans = 0;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            if (v[i][j] == '*' && !visited[i][j]) {
                ans++;
                queue<pair<int, int>> q;
                q.push({i, j});
                while (q.size()) {
                    auto cur = q.front();
                    q.pop();
                    for (int d = 0; d < 4; d++) {
                        int nx = cur.first + dx[d], ny = cur.second + dy[d];
                        if (valid(nx, ny) && !visited[nx][ny] && v[nx][ny] == '*') {
                            visited[nx][ny] = 1; 
                            q.push({nx, ny});
                        }
                    }
                }
            }
        }
    }
    cout << ans;
}

• Subtask 1: 50 / 50