#include<bits/stdc++.h>
using namespace std;
int main(){
	int i,j,n,a[100][100]={0};
	cin>>n;
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			if(i==j){
				a[i][j]=1;
			}
		}
	}
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			cout<<setw(3)<<a[i][j];
		}
		cout<<endl;
	}
	
	return 0;
} 
/**************************************************************
	Problem: 1190
	User: cyp
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2072 kb
****************************************************************/