2080644_ac_0ms_60k.c

北大大牛代码 1240道题的原代码 超级权威

# include <stdio.h>

void input()
{
	double p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y;

	while(scanf("%lf%lf%lf%lf%lf%lf%lf%lf",&p1x,&p1y,&p2x,&p2y,&p3x,&p3y,&p4x,&p4y)==8)
	{
		if(p2x-p3x==0&&p2y-p3y==0)
			printf("%.3lf %.3lf\n",p1x+p4x-p2x,p1y+p4y-p2y);
		else
			if(p2x-p4x==0&&p2y-p4y==0)
				printf("%.3lf %.3lf\n",p1x+p3x-p2x,p1y+p3y-p2y);
			else
				if(p1x-p3x==0&&p1y-p3y==0)
					printf("%.3lf %.3lf\n",p2x+p4x-p1x,p2y+p4y-p1y);
				else
					printf("%.3lf %.3lf\n",p2x+p3x-p1x,p2y+p3y-p1y);
	}
}

int main()
{
	input();
	return 1;
}