#include<stdio.h>
void printInvertedPyramid(int n){
    if(n<=0 || n%2==0){
        printf("Invalid Input");
        return;
    }
    for(int i=n;i>=1;i-=2){
        for(int j=0;j<(n-i)/2;j++){
        printf(" ");
        }
    for(int k=0;k<i;k++){
        printf("*");
    }
    printf("\n");
    }
}
int main()
int n;
scanf("%d",&n);
printInvertedPyramid(n);
return 0;
}