#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,m,i,j,s=1;
    cin>>m;
    n=m;
    int a[n][m];
    for(i=0;i<n;i++){
        for(j=0;j<m;j++) {
            a[i][j]=0;
            if(i==j){
            	a[i][j]=1;
            }
        }
}
    for(i=0;i<n;i++){
        for(j=0;j<m;j++) {
            cout<<setw(3)<<a[i][j];
        }
        cout<<endl;
    }
}
/**************************************************************
	Problem: 1190
	User: wuzhijing
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/