#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>



typedef struct point
{
    double x;
    double y;        
}point;

point pos(double ,double ,char,int,int);

main()
{
    int w,l;
    double x0,y0,x1,y1,ans=0;
    int i;
    point p;
    while (scanf("%d %d",&w,&l)!=EOF)
    {
        char direction[1000];
        ans=0;
        p.x=0;
        p.y=0;
        scanf("%lf %lf",&x0,&y0);
        scanf("%lf %lf",&x1,&y1);
        scanf("%s",direction); 
       // printf("%s\n",direction);
        int len=strlen(direction);
        //printf("len=%d\n",len);
        
        for (i=0;i<len;i++)
        {
            p=pos(x0,y0,direction[i],w,l);
            x0=p.x;
            y0=p.y;        
        }     
        ans=sqrt((p.x-x1)*(p.x-x1)+(p.y-y1)*(p.y-y1));
     
        printf("%.4lf\n",ans);
    }
}
point pos(double x,double y,char dir,int w,int l)
{
     
    point ans;
    if (dir=='F')
    {
        ans.x=x;
        ans.y=-y;                     
    }       
    if (dir=='L')
    {
        ans.x=-x;
        ans.y=y;     
    }
    if (dir=='B')
    {
        ans.x=x;
        ans.y=2*l-y;     
    }
    if (dir=='R')
    {
        ans.x=2*w-x;
        ans.y=y;    
    }
    return ans;
}

• 要处理长度为0的情况 和w l 为0 的情况 (1451) ecjtunh 2006-10-21 19:03:53
  • Re:要处理长度为0的情况 和w l 为0 的情况 (37) zhj5825 2006-10-21 19:06:44