poj 2013 Symmetric Order

#include <stdio.h>

int main()
{
	int n;
	int i;
	char string[20][30];
	int count=0;

	while(scanf("%d",&n))
	{
		if(n==0)
			break;

		for(i=1;i<=n;i++)
		{
			scanf("%s",string[i]);
			//printf("%s\n",string[i]);
		}

		printf("SET %d\n",++count);

		for(i=1;i<=n;i+=2)
			printf("%s\n",string[i]);

		if(n%2!=0)
			n--;

		for(i=n;i>=2;i-=2)
			printf("%s\n",string[i]);
	}

	return 0;
}