<코드>

#include <stdio.h>

int main()
{
	int n;
	
	fscanf(stdin, "%d", &n);
	
	for(int i=1; i<=n; i++)
	{
		for(int j=1; j<=n-i; j++)
			fprintf(stdout, "  ");
		
		for(int j=1; j<=(i*2-1); j++)
			fprintf(stdout, "* ");
		
		fprintf(stdout, "\n");
	}
	
	for(int i=n-1; i>0; i--)
	{
		for(int j=1; j<=n-i; j++)
			fprintf(stdout, "  ");
		
		for(int j=1; j<=(i*2-1); j++)
			fprintf(stdout, "* ");
		
		fprintf(stdout, "\n");
	}
	
	return 0;
}

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