#include<iostream>
using namespace std;
int n,ans；
int x1,x2,y1,y2;\\坐标（x分叉）
int a[107][107]; 
int read(){
   register int x=0,f=1;register char ch=cin.get();
   while(ch<'0'||ch>'9'){if(ch=='-'){f=-1;}ch=cin.get();}
   while(ch>='0'&&ch<='9')x=(x<<1)+(x<<3)+(ch^48),ch=cin.get();
   return x*f;}//快读
void dfs1(){
   while(x1>0&&x2<=n&&y1>0&&y2<=n){
   	if(a[x1][y1]==1&&a[x1][y2]==1&&a[x2][y1]==1&&a[x2][y2]){
   		ans++;
   	}
   	else return;
   	x1--;
   	x2++;
   	y1--;
   	y2++;
   }
}
void dfs2(int x,int y){
   while(x1>0&&x2<=n&&y1>0&&y2<=n){
   	if(a[x1][y1]==1&&a[x1][y2]==1&&a[x2][y1]==1&&a[x2][y2]){
   		ans++;
   	}
   	else return;
   	x1--;
   	x2++;
   	y1--;
   	y2++;
   }	
}
int main(){
   ios::sync_with_stdio(false);
   cout.tie(0);
   n=read();
   for(register int i=1;i<=n;i++){
   	for(register int j=1;j<=n;j++){
   		a[i][j]=cin.get()-'0';
   	}
   	cin.get();
   }
   for(register int i=1;i<=n;i++)for(register int j=1;j<=n;j++){
   	if(a[i][j]==1){
   		x1=i-1,y1=j-1,x2=i+1,y2=j+1;
   		dfs1();
   		x1=i,y1=j,x2=i+1,y2=j+1;
   		if(a[x2][y1]==1&&a[x2][y2]==1&&a[x1][y2]==1){
   			dfs2(i,j);
   		}
   	}
   } 
   cout<<ans;
}