#include<stdio.h>
int main(){
	int n,i,j;
	scanf("%d",&n);
	int a[n][n];
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			if(i==j){
				a[i][j] = 1;
			}else{
				a[i][j] = 0;
			}
		}
	}
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			printf("%3d",a[i][j]); 
		}
		printf("%s","\n");
	}
	return 0;
}

/**************************************************************
	Problem: 1190
	User: admin
	Language: C
	Result: Accepted
	Time:10 ms
	Memory:1144 kb
****************************************************************/