#include <stdio.h>

int main() {
    int n, astCount, spaceCount, outAstCount, outSpaceCount;
    scanf("%d", &n);
    spaceCount = (n-1)/2;
    if (n > 2 && n % 2 == 1) {
        for(astCount = 1; astCount <= n; astCount+=2){
            for (outSpaceCount = 0; outSpaceCount < spaceCount; outSpaceCount++) {
                printf(" ");
            }
            for (outAstCount = 0; outAstCount < astCount; outAstCount++) {
                printf("*");
            }
            printf("\n");
            spaceCount--;
        }
        astCount = n-2;
        spaceCount = 1;
        for(; astCount > 0; astCount-=2) {
            for (outSpaceCount = 0; outSpaceCount < spaceCount; outSpaceCount++) {
                printf(" ");
            }
            for (outAstCount = 0; outAstCount < astCount; outAstCount++) {
                printf("*");
            }
            printf("\n");
            spaceCount++;
        }
    }
    else{
        printf("input error");
    }
    return 0;
}