#include<stdio.h>
#include<string.h>
char s[100];
bool map[200][200],bo;
int n,m,x,y,xx,yy,a[11000],b[11000],c,zy;
void find(int xx,int yy,int xy)
{
    bool l,r,s,x;
    l=r=s=x=false;
    map[xx][yy]=false;
    if (map[xx+1][yy]) {printf("R");map[xx+1][yy]=false;c++;a[c]=xx+1;b[c]=yy;}
    if (map[xx][yy+1]) {printf("T");map[xx][yy+1]=false;c++;a[c]=xx;b[c]=yy+1;}
    if (map[xx-1][yy]) {printf("L");map[xx-1][yy]=false;c++;a[c]=xx-1;b[c]=yy;}
    if (map[xx][yy-1]) {printf("B");map[xx][yy-1]=false;c++;a[c]=xx;b[c]=yy-1;}
    if (xy==c) return;
    printf(",\n");
    if (xy<c)
      find(a[xy+1],b[xy+1],xy+1);

}
int main()
{
    memset(map,false,sizeof(map));
    memset(a,0,sizeof(a));
    memset(b,0,sizeof(b));
    gets(s);
    if (strlen(s)==1)
    {
        n=s[0]-48;
        for (int i=1;i<=n;i++)
        {
            scanf("%d%d",&x,&y);
            if (i==1)
            {
              xx=x;
              yy=y;
            }
            map[x][y]=true;
        }
        a[1]=xx;
        b[1]=xx;
        c=1;
        printf("%d %d\n",xx,yy);
        find(xx,yy,1);
        printf(".\n");
    }
    else
    {
        x=s[0]-48;
        y=s[2]-48;
        map[x][y]=true;
        zy=1;
        c=1;
        while (true)
        {
          gets(s);
          if (s[0]=='.') break;
          for (int i=0;i<=strlen(s);i++)
          {
             if (s[i]=='R')
             { c++;a[c]=x+1;b[c]=y;
               map[x+1][y]=true;
             }
             else
             if (s[i]=='T')
               {map[x][y+1]=true;c++;a[c]=x;b[c]=y+1;}
             else
             if (s[i]=='L')
               {map[x-1][y]=true;c++;a[c]=x-1;b[c]=y;}
             else
             if (s[i]=='B')
               {map[x][y-1]=true;c++;a[c]=x;b[c]=y-1;}
           }
           zy++;
           x=a[zy];
           y=b[zy];
        }
        printf("%d\n",zy);
        for (int i=1;i<=10;i++)
          for (int j=1;j<=10;j++)
            if (map[i][j]) printf("%d %d\n",i,j);
    }
}

Edited by author 09.01.2017 16:46