#include<bits/stdc++.h>
using namespace std;
int a[11][11],n,i,j;
int main(){
    cin>>n;
    for(i=0;i<n;i++){
        a[i][i]=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: zhangziang
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/