#include<stdio.h>
#include<stdlib.h>

void print_pattern(int n) {
    if(n <= 0) {
        printf("Invalid Input\n");
        return;
    }
    int size = 2 * n - 1;
    for(int i = 0; i < size; i++) {
        for(int j = 0; j < size; j++) {
            int dist_i = abs(i - (n - 1));
            int dist_j = abs(j - (n - 1));
            int dist_i > dist_j ? dist_i : dist_j);
            printf("%d", num);
        }
        printf("\n");
    }
}
int main() {
    if (scanf("%d", &n)== 1) {
        printf_pattern(n);
    }
    r