#include<stdio.h>
int main() {
    int n;
    scanf("%d",&n);
    if(n<=0 || n>10 || n%2==0){
        printf("Invalid Input");
        return 0;
    }
    int st=n;
    int sp =0;
    while(st>0){
        for(int s=0;s<sp;s++){
            printf(" ");
        }
        for(int j=0;j<st;j++){
            printf(" ");
        }
        printf("\n");
        sp += 1;
        st -=2;
    }
    return 0;