#include <cstdio>
#include <stdlib.h>
#include <time.h>

int main()
{
    int n, m;
    freopen(".20.in","w",stdout);
    srand(time(NULL));
    scanf("%d", &n);
    printf("%d\n", n);
    for(int i = 0 ; i < n ; i++ )
    {
        for(int j = 0 ; j < n ; j++ )
            printf("%d ", rand()%2 );
        puts("");
    }

}