3333877_ac_0ms_208k.c

北大大牛代码 1240道题的原代码 超级权威

#include <stdio.h>
#include <math.h>
#define eps 1e-5

int main()
{
	double x, y, c;
	double min, mid, max, a, b;
	
	while (scanf("%lf%lf%lf",&x,&y,&c)==3)
	{
		min = 0;max = x < y ? x : y;
		while (min < max - eps)
		{
			mid = (min+max)/2.0;
			a = sqrt(c*c/(y*y/mid/mid-1.0));
			b = sqrt(c*c/(x*x/mid/mid-1.0));
			a += b;
			if (a > mid)
				max = mid;
			else
				min = mid;
		}
		printf("%.3lf\n",min);
	}
	return 0;
}