314 - Robot

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shohag sust cse
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Posts: 4
Joined: Tue Aug 06, 2002 11:38 am

314 - Robot

Post by shohag sust cse » Tue Apr 01, 2003 2:23 pm

Code: Select all

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

#define MAX_R 51
#define MAX_C 51
#define INF -1

int what_dir(const char *p);
void enqueue(int r,int c,int d);
void dequeue(int& r,int& c,int& d);



long cost[MAX_R][MAX_C][4];
int queue[MAX_R*MAX_C*4+4];
int head,tail;

int dr[]={-1,0,1,0};
int dc[]={0,1,0,-1};

char *name_dir[]={"north","east","south","west"};


int main()
{
  int R,C,i,j,d;
  int sr,sc,tr,tc;
  int dir,ndir,min;
  int matrix[MAX_R][MAX_C];
  char s_dir[10];
  int r,c,nr,nc;
  while(scanf("%d%d",&R,&C)&&(R||C))
  {
  		for(i=0;i<R;i++)
	  		for(j=0;j<C;j++)
	     	{
				scanf("%d",&matrix[i][j]);
				for(d=0;d<4;d++)
		   		cost[i][j][d]=INF;
	     	}
      scanf("%d %d %d %d %s",&sr,&sc,&tr,&tc,s_dir);
      dir=what_dir(s_dir);
      head=tail=0;
      cost[sr][sc][dir]=0;
      enqueue(sr,sc,dir);
      while(head!=tail)
	   {
	      dequeue(r,c,dir);
	      if(r==tr && c==tc)
         	break;
	      for(i=1;i<4;i++)
         {
		   	nr=r+i*dr[dir];
		   	nc=c+i*dc[dir];
		   	ndir=dir;
		   	if((nr>=0 && nr<R)&&
		      	(nc>=0 && nc<C)&&
		      	(matrix[nr][nc]!=1)&&
		      	(matrix[nr-1][nc-1]!=1)&&
		      	(matrix[nr][nc-1]!=1)&&
		      	(matrix[nr-1][nc]!=1)&&
		      	(cost[nr][nc][ndir]==INF))
		      	{
						cost[nr][nc][ndir]=cost[r][c][dir]+1;
						enqueue(nr,nc,ndir);
		      	}
		   	else
		      	break;
		 	}
	      ndir=(dir+1)%4;
	      if(cost[r][c][ndir]==INF)
		 	{
		   	cost[r][c][ndir]=cost[r][c][dir]+1;
		   	enqueue(r,c,ndir);
		 	}
	      ndir=(dir+3)%4;
	      if(cost[r][c][ndir]==INF)
		 	{
		   	cost[r][c][ndir]=cost[r][c][dir]+1;
		   	enqueue(r,c,ndir);
		 	}

	    }
     min=INF;
     for(dir=0;dir<3;dir++)
     {
	  		if(cost[tr][tc][dir]!=INF)
	      {
				if(min==INF)
		      	min=cost[tr][tc][dir];
				else if(min>cost[tr][tc][dir])
		     		min=cost[tr][tc][dir];
	      }
	  }
     printf("%d\n",min);

    }

}

void enqueue(int r,int c,int d)
{
  queue[tail++]=(((r*MAX_C)+c)*4+d);
}

void dequeue(int& r,int& c,int& d)
{
  int t;
  d=queue[head]%4;
  t=queue[head++]/4;
  c=t%MAX_C;
  r=t/MAX_C;
}


int what_dir(const char *p)
{
  int i;
  for(i=0;i<4;i++)
    if(strcmp(p,name_dir[i])==0)
      return i;
  return -1;
}

shohag sust cse
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Posts: 4
Joined: Tue Aug 06, 2002 11:38 am

Post by shohag sust cse » Fri Apr 11, 2003 4:47 pm

Thax all i got Ac.

shohag :D

Almost Human
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Posts: 93
Joined: Sun Jan 12, 2003 3:30 pm

314 - Why WA .... ?

Post by Almost Human » Tue Jul 22, 2003 10:19 am

Is there any special case I should consider?

thanks

Code: Select all

#include <stdio.h>
#include <malloc.h>
#include <string.h>

struct TQueue
{
  int x , y , direction , time ;
  struct TQueue* next ;
} *head = 0 , *tail ;

void enqueue ( int , int , int , int ) ;
void dequeue ( int* , int* , int* , int* ) ;
void dequeueall ( void ) ;

int map[52][52] , flag[52][52] , direct[52][52][4] ;

int main ( void )
{
  int row , column , i , j , srcx , srcy , destx , desty , direction , time , nextx , nexty , nextdirection , prevdirection ;
  char temporary[10] ;

  freopen ( "314.in" , "r" , stdin ) ;
  freopen ( "314.out" , "w" , stdout ) ;

  while ( scanf ( "%d %d\n" , &row , &column ) != EOF )
  {
	 if ( row == 0 && column == 0 ) break ;

	 memset ( &flag , 0 , sizeof ( flag ) ) ;
	 memset ( &direct , 0 , sizeof ( direct ) ) ;

	 for ( i = 0 ; i < row ; i ++ )
		for ( j = 0 ; j < column ; j ++ )
		  scanf ( "%d" , &map[i][j] ) ;

	 scanf ( "%d %d %d %d %s\n" , &srcy , &srcx , &desty , &destx , temporary ) ;

	 switch ( temporary[0] )
	 {
		case 'n' : direction = 0 ; break ;
		case 'e' : direction = 1 ; break ;
		case 's' : direction = 2 ; break ;
		case 'w' : direction = 3 ; break ;
	 }

	 enqueue ( srcx , srcy , direction , 0 ) ;
	 flag[srcy][srcx] = 1 ;
	 direct[srcy][srcx][direction] = 1 ;

	 while ( head )
	 {
		dequeue ( &srcx , &srcy , &direction , &time ) ;

		if ( srcx == destx && srcy == desty ) break ;

		switch ( direction )
		{
		  case 0 : nextx = srcx ; nexty = srcy - 1 ; break ;
		  case 1 : nextx = srcx + 1 ; nexty = srcy ; break ;
		  case 2 : nextx = srcx ; nexty = srcy + 1 ; break ;
		  case 3 : nextx = srcx - 1 ; nexty = srcy ; break ;
		}

		if ( nextx >= 0 && nextx < column && nexty >= 0 && nexty < row )
		  if ( !map[nexty][nextx] && !flag[nexty][nextx] )
			 enqueue ( nextx , nexty , direction , time + 1 ) , flag[nexty][nextx] = 1 , direct[nexty][nextx][direction] = 1 ;

		nextdirection = direction + 1 ;
		if ( nextdirection == 4 ) nextdirection = 0 ;
		prevdirection = direction - 1 ;
		if ( prevdirection < 0 ) prevdirection = 3 ;

		if ( !direct[srcy][srcx][nextdirection] )
		  enqueue ( srcx , srcy , nextdirection , time + 1 ) , direct[srcy][srcx][nextdirection] = 1 ;
		if ( !direct[srcy][srcx][prevdirection] )
		  enqueue ( srcx , srcy , prevdirection , time + 1 ) , direct[srcy][srcx][prevdirection] = 1 ;
	 }

	 dequeueall ( ) ;

	 if ( srcx == destx && srcy == desty )
		printf ( "%d\n" , time ) ;
	 else
		printf ( "-1\n" ) ;
  }

  return 0 ;
}

void enqueue ( int x , int y , int direction , int time )
{
  struct TQueue* curr = ( struct TQueue* ) malloc ( sizeof ( struct TQueue ) ) ;

  curr -> x = x ;
  curr -> y = y ;
  curr -> direction = direction ;
  curr -> time = time ;
  curr -> next = 0 ;

  if ( !head )
  {
	 head = curr ;
  }
  else
  {
	 tail -> next = curr ;
  }
  tail = curr ;
}

void dequeue ( int* x , int* y , int* direction , int* time )
{
  struct TQueue* curr ;

  *x = head -> x ;
  *y = head -> y ;
  *direction = head -> direction ;
  *time = head -> time ;

  curr = head ;
  head = head -> next ;

  free ( curr ) ;
}

void dequeueall ( void )
{
  int x , y , direction , time ;

  while ( head )
  {
	 dequeue ( &x , &y , &direction , &time ) ;
  }
}

User avatar
babor
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Posts: 16
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Contact:

Post by babor » Wed Sep 17, 2003 7:14 am

Hai, friend I think you didnot consider that at the "destination " at any direction the cost may be shortest. So u have to check all four direction's
cost which is minimum. Thanks
babor

Yen
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Posts: 2
Joined: Mon May 10, 2004 5:32 am
Location: Bangladesh
Contact:

Runtime Error on 314

Post by Yen » Mon May 10, 2004 6:37 am

I have got Runtime Error (SIGSEGV) on problem 314(Robot). I have test my code with several input set and got ok. Here is my code. Please help me. :( :( :(

Code: Select all



#include<stdio.h>
#include<conio.h>

#define MaxM 55L
#define MaxN 55L

#define INF MaxM*MaxN*5L
#define QSIZE MaxN*MaxM

char A[MaxM][MaxN];
int M,N;
long cost[MaxM][MaxN][5];
int front=0;
int rear=0;

struct info
{
 int r,c,f;
};
info start,end,Queue[QSIZE+2];

void Enqueue(info item)
{
 rear++;
 if(front==rear)
 {
  printf("Error:Queue is full!\n");
  if(front==0)
	rear=QSIZE-1;
  else
	rear=rear-1;
 }
 else
  Queue[rear]=item;
}

info Dequeue()
{
 info item;
 if(front==rear)
 {
  printf("Error:Queue is empty!\n");
 }

 else
 {
  front++;
  item=Queue[front];
 }
 return item;
}

int isempty()
{
	return (front-rear);
}

int fun(int u,int v,int x,info y)
{
	if(A[u][v]!='#')
	{
			if(cost[u][v][x] > cost[y.r][y.c][y.f]+1)
			{
				cost[u][v][x]=cost[y.r][y.c][y.f]+1;

				y.r=u;
				y.c=v;
				y.f=x;

				Enqueue(y);
				return 1;
			}
	}
	return 0;
}

void BFS()
{
 info u;
 int i,j,k;
 for(i=0;i<=N+3;i++)
	for(j=0;j<=M+3;j++)
		for(k=0;k<5;k++)
			cost[i][j][k]= INF;

 cost[start.r][start.c][start.f]=0;
 Enqueue(start);

	while(isempty())
	{
		u=Dequeue();
		if(u.f==1)
		{
			fun(u.r,u.c,2,u);
			fun(u.r,u.c,4,u);
			if( fun(u.r-1,u.c,1,u) )
			if( fun(u.r-2,u.c,1,u) )
				fun(u.r-3,u.c,1,u);
		 }
		else if(u.f==2)
		{
			fun(u.r,u.c,3,u);
			fun(u.r,u.c,1,u);
			if( fun(u.r,u.c+1,2,u) )
			if( fun(u.r,u.c+2,2,u) )
				fun(u.r,u.c+3,2,u);
		 }
		else if(u.f==3)
		{
			fun(u.r,u.c,4,u);
			fun(u.r,u.c,2,u);
			if( fun(u.r+1,u.c,3,u) )
			if( fun(u.r+2,u.c,3,u) )
				fun(u.r+3,u.c,3,u);
		 }
		else
		{
			fun(u.r,u.c,1,u);
			fun(u.r,u.c,3,u);
			if( fun(u.r,u.c-1,4,u) )
			if( fun(u.r,u.c-2,4,u) )
				fun(u.r,u.c-3,4,u);
		 }
	}
}

int main()
{

 int i,j,t;
 char s[100];
 long min;

 while(scanf("%d%d",&M,&N)==2 && (M || N))
 {
	M=M+3;
	N=N+3;

	for(i=3;i<M;i++)
		for(j=3;j<N;j++)
			A[i][j]='.';

	for(i=0;i<=M+3;i++)
		A[i][0]=A[i][1]=A[i][2]=A[i][3]=A[i][N]=A[i][N+1]=A[i][N+2]='#';

	for(i=0;i<=N+3;i++)
		A[0][i]=A[1][i]=A[2][i]=A[3][i]=A[M][i]=A[M+1][i]=A[M+2][i]='#';

	for(i=3;i<M;i++)
		for(j=3;j<N;j++)
		{
			scanf("%d",&t);
			if(t==1)
				A[i][j]=A[i+1][j]=A[i][j+1]=A[i+1][j+1]='#';
		}

		scanf("%d%d%d%d",&start.r,&start.c,&end.r,&end.c);
		scanf("%s",s);
		start.r += 3;
		start.c += 3;
		end.r += 3;
		end.c += 3;

		switch(s[0])
		{
			case 'n':	start.f=1; break;
			case 'e':	start.f=2; break;
			case 's':	start.f=3; break;
			case 'w':	start.f=4; break;
		}

	   BFS();
	   min=INF;
	   for(i=1;i<=4;i++)
			if(cost[end.r][end.c][i]<min)
				min=cost[end.r][end.c][i];

	   if(min==INF)
	   puts("-1");
	   else
	   printf("%d\n",min);
	}

	return 0;
}

MatteG
New poster
Posts: 3
Joined: Mon Oct 04, 2004 3:39 pm

314, Robot, Help!

Post by MatteG » Mon Oct 04, 2004 4:02 pm

I need som tips for problem 314, my version gives right result on example input and runs for a long time at the judge befor i get "Wrong Answer", my gess is that it is som speciale case which my program can

anupam
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Posts: 405
Joined: Wed Aug 28, 2002 6:45 pm
Contact:

Post by anupam » Mon Oct 04, 2004 9:45 pm

check whether the source node contains an obstacle. check whether the destination node has an obstacle.
"Everything should be made simple, but not always simpler"

MatteG
New poster
Posts: 3
Joined: Mon Oct 04, 2004 3:39 pm

Post by MatteG » Tue Oct 05, 2004 8:05 pm

Thats done, i

Emilio
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Joined: Sun Oct 17, 2004 8:31 pm
Location: Murcia, Spain

P314 Help, help, help, help, please!!!!

Post by Emilio » Sat Dec 25, 2004 10:31 pm

Hello, I can't discover my bug in my code. :(
If you don't want see my code, can you give me the correct output for the next input?

Thanks in advance. :wink:


Here is the input:

Code: Select all

9 10
0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 0 0 0 1 0
0 0 0 1 0 0 0 0 0 0
0 0 1 0 0 0 0 0 0 0
0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 1 0 0 0 0
0 0 0 1 1 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0 1 0
7 2 2 7 south
8 7
0 0 0 0 0 0 0
1 0 0 0 0 0 0
0 1 0 0 0 0 1
1 0 0 0 0 0 0
0 0 0 0 0 0 0
0 1 0 0 0 0 0
0 0 0 0 0 0 0
1 0 1 1 0 0 0
4 2 2 3 west
6 13
0 0 0 0 1 1 1 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 1 0 1 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 1 0 1 0 0 0 0
3 9 2 6 north
13 19
0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0
1 1 1 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0
0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 0
0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0
0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0
0 0 1 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0 0 0 0 1 0 0 0 1 1 0 0 0 1 1 0 0 0 0
0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
0 1 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
8 9 4 3 west
38 37
0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0
0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
0 0 0 0 0 0 0 1 0 0 0 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 1 1 0 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 1 0 1 0 1
0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 1 1 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0
0 0 0 0 0 0 0 1 0 0 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
0 1 0 0 0 0 0 0 0 1 1 0 1 0 0 0 0 0 0 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0
0 0 0 1 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0
0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 1 0 1
0 0 0 1 0 1 0 0 1 0 0 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 0 1 0
0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0
1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 0 1 0 0 0 0
0 0 0 0 0 0 1 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0
0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0
0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0
0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0
36 31 13 21 east
4 3
0 0 0
0 0 0
1 0 0
0 0 0
1 1 1 1 west
20 17
0 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 0
0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0
0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0
0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0
0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0
0 0 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0
0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 0
0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 0 0 1 0 0 0 0 0 1 1 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0
0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0
0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0
0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0
5 15 1 9 south
28 46
1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0
0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0
0 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0
1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 1
0 0 0 0 0 1 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 1 0 0 0 0 0 1 1 1 0 1 0 0
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2 23 23 18 south
7 46
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0 0 0 1
1 0 0 1
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29 8
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0 0 0 0 0 1 0 0
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2 5 9 4 north
50 10
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40 4 10 3 west
0 0

Last edited by Emilio on Sun Dec 26, 2004 1:08 am, edited 2 times in total.

User avatar
UFP2161
A great helper
Posts: 277
Joined: Mon Jul 21, 2003 7:49 pm
Contact:

Post by UFP2161 » Sat Dec 25, 2004 10:41 pm

I got:

Code: Select all

12
5
3
7
-1
0
-1
4
20
11
-1
-1
-1
-1
-1
16
-1
-1
-1
-1
-1
10
-1
-1
19
-1
11
-1
-1
-1
-1
13
28
27
-1
-1
4
-1
-1
-1
-1
23
6
1
-1
-1
-1
27
-1

Emilio
Experienced poster
Posts: 163
Joined: Sun Oct 17, 2004 8:31 pm
Location: Murcia, Spain

Post by Emilio » Sun Dec 26, 2004 1:33 am

I got ACCEPTED. :D
My mistake was that I forgot the walls of the room.

Thanks very much!!!

jdmetz
New poster
Posts: 25
Joined: Fri May 27, 2005 5:23 pm
Location: Ann Arbor, MI USA

here are some test cases

Post by jdmetz » Tue Jun 21, 2005 9:23 pm

Notes:
- It wasn't clear to me from the problem, but you cannot travel on the edges.
- Note that coordinates are row col (y x)

Here is some sample input:

Code: Select all

9 10
0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 0 0 0 1 0
0 0 0 1 0 0 0 0 0 0
0 0 1 0 0 0 0 0 0 0
0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 1 0 0 0 0
0 0 0 1 1 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0 1 0
7 2 2 7 south
2 3
0 0 0
0 0 0
1 1 1 2 west
5 5
0 0 0 0 0
0 0 0 0 0
0 1 1 1 0
0 0 0 0 0
0 0 0 0 0
1 1 4 4 east
2 3
0 0 0
0 0 1
1 1 1 2 east
0 0
And output:

Code: Select all

12
3
-1
-1

Mohammad Mahmudur Rahman
Experienced poster
Posts: 154
Joined: Sat Apr 17, 2004 9:34 am
Location: EEE, BUET

Post by Mohammad Mahmudur Rahman » Wed Dec 21, 2005 10:33 pm

Why the answer for your 3rd test case should be -1? Can't the robot move through the sides of the grid?
According to the problem statement -
The distance of the track closest to the side of the store is exactly one meter. The robot has a circular shape with diameter equal to 1.6 meter. The track goes through the center of the robot.
You should never take more than you give in the circle of life.

ayon
Experienced poster
Posts: 161
Joined: Tue Oct 25, 2005 8:38 pm
Location: buet, dhaka, bangladesh

Post by ayon » Thu Dec 22, 2005 9:57 am

my ac program gives the answer similar to jdmetz. it cannot moves through the border. the robot has a diameter. it moves along the intersections of the grid, not along the grid itself. if the robot moves along the border, its one side will go outside the store.
ishtiak zaman
----------------
the world is nothing but a good program, and we are all some instances of the program

Mohammad Mahmudur Rahman
Experienced poster
Posts: 154
Joined: Sat Apr 17, 2004 9:34 am
Location: EEE, BUET

Post by Mohammad Mahmudur Rahman » Thu Dec 22, 2005 3:28 pm

Hmm, that is I misinterpreted the diameter fact. Thanks a lot for your help.
You should never take more than you give in the circle of life.

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