Submission #640201

#	Time	Username	Problem	Language	Result	Execution time	Memory
640201		iee	Emacs (COCI20_emacs)	C++17	50 / 50	1 ms	596 KiB

emacs

#include <bits/stdc++.h>
using namespace std;
const int N = 505;
char c[N][N];
int vis[N][N], n, m;
const int nxt[4][2] = {{0, 1}, {1, 0}, {-1, 0}, {0, -1}};
void dfs(int x, int y) {
  if (vis[x][y] || c[x][y] != '*')
    return;
  vis[x][y] = 1;
  for (int d = 0; d < 4; ++d) {
    int dx = x + nxt[d][0], dy = y + nxt[d][1];
    if (dx < 1 || dy < 1 || dx > n || dy > m) continue;
    dfs(dx, dy);
  }
}
int main() {
  cin >> n >> m;
  for (int i = 1; i <= n; ++i)
    cin >> c[i] + 1;
  int tot = 0;
  for (int i = 1; i <= n; ++i)
    for (int j = 1; j <= m; ++j)
      if (!vis[i][j] && c[i][j] == '*')
        ++tot, dfs(i, j);
  cout << tot;
  return 0;
}

Compilation message (stderr)

emacs.cpp: In function 'int main()':
emacs.cpp:20:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   20 |     cin >> c[i] + 1;
      |            ~~~~~^~~

• Subtask 1: 50 / 50