Submission #731417

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
731417	2023-04-27T12:01:50 Z	eneskav	Emacs (COCI20_emacs)	C++17	Compilation error	0 ms	0 KB

emacs

#include <iostream>
#include <queue>
#define int long long
using namespace std;
int dx[4] = {0, 0, -1, 1};
int dy[4] = {-1, 1, 0, 0};
signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
  
    int n, m;
    cin >> n >> m;
    bool a[n][m];
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < m; ++j)
        {
            char c;
            cin >> c;
            a[i][j] = (c == '.');
        }
    }
    int ans = 0;
    bool vis[n][m];
    memset(vis, false, sizeof(vis));
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < m; ++j)
        {
            if (vis[i][j])
                continue;
            if (a[i][j])
                continue;
            queue<pair<int, int> > q;
            q.push(make_pair(i, j));
            while (!q.empty())
            {
                pair<int, int> p = q.front();
                q.pop();
                int x = p.first, y = p.second;
                if (vis[x][y])
                    continue;
                vis[x][y] = true;
                for (int k = 0; k < 4; ++k)
                {
                    int nx = x + dx[k], ny = y + dy[k];
                    if (nx < 0 || nx >= n || ny < 0 || ny >= m)
                        continue;
                    if (a[nx][ny])
                        continue;
                    q.push(make_pair(nx, ny));
                }
            }
            ++ans;
        }
    }
    cout << ans;
}

Compilation message

emacs.cpp: In function 'int main()':
emacs.cpp:27:5: error: 'memset' was not declared in this scope
   27 |     memset(vis, false, sizeof(vis));
      |     ^~~~~~
emacs.cpp:3:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    2 | #include <queue>
  +++ |+#include <cstring>
    3 | #define int long long