/*
   *
  ***
 *****
*******
where row = 4


*/


#include<stdio.h>

int main() {
    int n, m;
    scanf("%d", &n);
    int row = n;
    int collumn = (2 * n) - 1;
    int low = (collumn + 1)/2;
    int high = low;
    for(int i=1;i<=row;i++) {
        for(int j=1;j<=collumn;j++) {
            if(j>=low&&j<=high) {
                printf("*");
            }
            else {
                printf(" ");
            }
        }
        printf("\n");
        low--;
        high++;
    }

    return 0;
}