求助嘤嘤嘤

#include<iostream>
using namespace std;
char a[1001][1001];
int b[1001][1001],n;
int main()
{
	cin>>n;
	for(int i=1;i<=n;i++)
	for(int j=1;j<=n;j++)
	cin>>a[i][j];
	for(int i=1;i<=n;i++)
	for(int j=1;j<=n;j++)
	if(a[i][j]=='y')
	{
		if(a[i][j+1]=='i'&&a[i][j+2]=='z'&&a[i][j+3]=='h'&&a[i][j+4]=='o'&&a[i][j+5]=='n'&a[i][j+6]=='g')
		b[i][j]=b[i][j+1]=b[i][j+2]=b[i][j+3]=b[i][j+4]=b[i][j+5]=b[i][j+6]=1;
		if(a[i+1][j+1]=='i'&&a[i+2][j+2]=='z'&&a[i+3][j+3]=='h'&&a[i+4][j+4]=='o'&&a[i+5][j+5]=='n'&a[i+6][j+6]=='g')
		b[i][j]=b[i+1][j+1]=b[i+2][j+2]=b[i+3][j+3]=b[i+4][j+4]=b[i+5][j+5]=b[i+6][j+6]=1;
		if(a[i+1][j]=='i'&&a[i+1][j]=='z'&&a[i+1][j]=='h'&&a[i+1][j]=='o'&&a[i+1][j]=='n'&a[i+1][j]=='g')
		b[i][j]=b[i+1][j]=b[i+1][j]=b[i+1][j]=b[i+1][j]=b[i+1][j]=b[i+1][j]=1;
		if(a[i-1][j+1]=='i'&&a[i-2][j+2]=='z'&&a[i-3][j+3]=='h'&&a[i-4][j+4]=='o'&&a[i-5][j+5]=='n'&a[i-6][j+6]=='g')
		b[i][j]=b[i-1][j+1]=b[i-2][j+2]=b[i-3][j+3]=b[i-4][j+4]=b[i-5][j+5]=b[i-6][j+6]=1;
		if(a[i][j-1]=='i'&&a[i][j-2]=='z'&&a[i][j-3]=='h'&&a[i][j-4]=='o'&&a[i][j-5]=='n'&a[i][j-6]=='g')
		b[i][j]=b[i][j-1]=b[i][j-2]=b[i][j-3]=b[i][j-4]=b[i][j-5]=b[i][j-6]=1;
		if(a[i-1][j-1]=='i'&&a[i-2][j-2]=='z'&&a[i-3][j-3]=='h'&&a[i-4][j-4]=='o'&&a[i-5][j-5]=='n'&a[i-6][j-6]=='g')
		b[i][j]=b[i-1][j-1]=b[i-2][j-2]=b[i-3][j-3]=b[i-4][j-4]=b[i-5][j-5]=b[i-6][j-6]=1;
		if(a[i-1][j]=='i'&&a[i-2][j]=='z'&&a[i-3][j]=='h'&&a[i-4][j]=='o'&&a[i-5][j]=='n'&a[i-6][j]=='g')
		b[i][j]=b[i-1][j]=b[i-2][j]=b[i-3][j]=b[i-4][j]=b[i-5][j]=b[i-6][j]=1;
	}
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=n;j++)
		if(b[i][j])
		cout<<a[i][j]; 
		else
		cout<<'*';
		cout<<endl;
	}
	
}