#include<stdio.h>
int main(){
    int n,i,space,s,j;
    scanf("%d",&n);
    if(n<=0||n>10||n%2==0)
{
    printf("Invalid input");
}
else{
    for(i=n;i>=1;n>=2)
    {
        space=(n-1)/2;
        for(s=0;s<spaces;s++)
    {
        printf(" ");
    }
    for(j=0;j<i;j++){
        printf(" ");
    }
    printf("\n");

}
}