CodeForces 203D Hit Ball 水！计算几何

#include <stdio.h>
#define eps 1e-8
int main()
{
    double a,b,m,vx,vy,vz;
    while(scanf("%lf%lf%lf",&a,&b,&m)==3)
    {
        scanf("%lf%lf%lf",&vx,&vy,&vz);
        vy=-vy;
        double t=m/vy;
        int count=int(t*vz/b);//反射的次数
        double y1=t*vz-count*b;
        if(count%2) y1=b-y1;
        bool ret;
        if(vx>0) ret=false;
        else ret=true,vx=-vx;
        double y2;
        if(vx<=eps&&-vx<=eps) y2=a/2.0;
        else
        {
            double s1=0.5*a*vy/vx;
            if(m<s1) y2=(s1-m)*vx/vy;
            else
            {
                m=m-s1;
                t=m/vy;
                count=int(t*vx/a);
                y2=t*vx-count*a;
                if(count%2) y2=a-y2;
            }
        }
        if(!ret) y2=a-y2;
        printf("%.10lf %.10lf\n",y2,y1);
    }
    return 0;
}#include <stdio.h>
#define eps 1e-8
int main()