C++ :

#include <cstdio>
using namespace std;
int n,m,tmp,tmp1;
int map[1001][1001],x[100002],y[100002];
int main()
{
	scanf ("%d%d",&n,&m);
	for (int i=1;i<=m;i++)
	{
		scanf ("%d%d",&x[i],&y[i]);
	}
	for (int i=1;i<=n;i++)
	{
		for (int j=1;j<=n;j++)
		{
			map[i][j]=1;
		}
	}
	for (int i=1;i<=m;i++)
	{
		if (map[x[i]][y[i]]==1)
		{
			map[x[i]][y[i]]=0;
			map[x[i]+1][y[i]]=0;
			map[x[i]-1][y[i]]=0;
			map[x[i]][y[i]+1]=0;
			map[x[i]][y[i]-1]=0;
		}
	}
	for (int i=1;i<=n;i++)
	{
		for (int j=1;j<=n;j++)
		{
			if (map[i][j]==0)
			{
				tmp++;
			}
			else
			{
				tmp1++;
			}
		}
	}
	if (tmp==n*n)
	{
		printf ("You Died!");
		return 0;
	}
	else
	{
		printf ("%d\n",tmp1);
	}
	for (int i=1;i<=n;i++)
	{
		for (int j=1;j<=n;j++)
		{
			printf ("%d ",map[i][j]);
		}
		printf ("\n");
	}
	return 0;
}