大佬们，逼人自作主张写了个不知所云的玩意，但全RE 请问是根本就不能这么写还是哪里有问题，谢谢大佬！ （悬赏我这不值钱的关注）

#include<bits/stdc++.h>
using namespace std;
long long n,m;
char c[1000][1000];
long long x[1000],y[1000];
long long ans;
long long a = 1;
int main()
{ 
    cin >> n >> m;
	for(long long i = 1; i <= n; i++)
	{
		for(long long j = 1; j <= m; j++)
		{
			cin >> c[i][j];
			if(c[i][j] == '0')
			{
				x[a] = i;
				y[a] = j;
				a++;
			}
		}
	} 
	for(long long i = 1; i <= a - 1; i++)
	{
		if(x[i] != 0 and y[i] != 0 and c[x[i] + 1][y[i]] == '*' and c[x[i] - 1][y[i]] != '0' and c[x[i]][y[i] + 1] != '0' and c[x[i]][y[i] - 1] != '0')
		{
			ans++;
		}
	 } 
	cout << ans;
	return 0;
}