#include <stdio.h>

int main() {
	int n = 5;

	for (int i = 1, increment = 1; ; ) {
		if (i == 0) break;

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

		if (i == n) increment = -1;
		i += increment;
	}
}