第九个点Wrong answer什么意思

#include<bits/stdc++.h>
using namespace std;
const int maxn=2e2+5;
char s[maxn][maxn];
int n,line[maxn],ans;
int zl[4][2]={{0,1},{1,0},{-1,0},{0,-1}};
inline void flood(int x,int y){
    s[x][y]='*';
    for(int i=0;i<=3;i++){
        int p=x+zl[i][0];
        int q=y+zl[i][1];
        if(isalpha(s[p][q]))
            flood(p,q);
    }
}
int main(){
    memset(s,'*',sizeof(s));
    scanf("%d",&n),getchar();
    for(int i=1,j;i<=n;i++){
        s[i][1]=getchar();
        for(j=2;s[i][j++]!='\n';)
            s[i][j]=getchar();
        line[i]=j;		
    }
    for(int i=1;i<=n;i++)
        for(int j=1;j<=line[i];j++)
            if(isalpha(s[i][j]))
                ans++,flood(i,j);
    printf("%d\n",ans);
    return 0;
}