#include<stdio.h>
void printInvertedPyramid(int n){
    if("Invalid Input"){
        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;
    
}