#include <stdio.h>

int main() {
	int size;
	printf("Enter pyramid size: ");
	scanf("%d", &size);

	for (int i = 1; i <= size; i++) {
		for (int i2 = 0; i2 < size - i; i2++) printf(" ");
		for (int i2 = 0; i2 < (2 * i) - 1; i2++) printf("*");
		printf("\n");
	}

	for (int i = size - 1; i > 0; i--) {
		for (int i2 = 0; i2 < size - i; i2++) printf(" ");
		for (int i2 = 0; i2 < (2 * i) - 1; i2++) printf("*");
		printf("\n");
	}
}