#include <bits/stdc++.h>
using namespace std;
int n, m, g[1005][1005], ans = 0;
void dfs(int x, int y) {
if (g[x][y] == 0) {
ans++;
} else if (g[x][y] == 1 && g[x - 1][y - 1] != 0 && g[x][y - 1] != 0 && g[x + 1][y - 1] != 0 && g[x - 1][y] != 0 && g[x + 1][y] != 0 && g[x - 1][y + 1] != 0 && g[x][y + 1] != 0 && g[x + 1][y + 1] != 0) {
ans++;
}
}
int main() {
scanf("%d%d", &n, &m);
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
cin >> g[i][j];
}
}
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
if (g[i][j] == 1) {
g[i][j] = 2;
} else if (g[i][j] == 0 && g[i - 1][j - 1] == 0 && g[i][j - 1] == 0 && g[i + 1][j - 1] == 0 && g[i - 1][j] == 0 && g[i + 1][j] == 0 && g[i - 1][j + 1] == 0 && g[i][j + 1] == 0 && g[i + 1][j + 1] == 0) {
g[i][j] = 0;
} else {
g[i][j] = 1;
}
}
}
//2是雷,1是数字,0是空格
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
dfs(i, j);
}
}
cout << ans;
return 0;
}
我认为思路应该大方向没问题,但是样例输出33