#include <stdio.h>

int main(){

    int row;
    printf("Enter the number of rows: ");
    scanf("%d",&row);

    int rows=row/2-1;
    for (int i=1; i<=rows; i++){
        for (int st=1; st<=i; st++){
            printf("* ");
        }for (int sp=rows-i+1; sp>0; sp--){
            printf("  ");
        }for (int sp=rows+1; sp>i; sp--){
            printf("  ");
        }for (int st=1; st<=i; st++){
            printf("* ");
        }printf("\n");
    }for (int line=1; line<=2; line++){
        for (int i=1; i<=2*rows+2; i++){
        printf("* ");
        }printf("\n");
    }for (int i=1; i<=rows; i++){
        for (int st=rows+1; st>i; st--){
            printf("* ");
        }for (int sp=1;  sp<=i; sp++){
            printf("  ");
        }for (int sp=1; sp<=i; sp++){
            printf("  ");
        }for (int st=rows-i+1;st>0; st--){
            printf("* ");
        }printf("\n");
    }




    return 0;
}