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Re:难道是作业??瞬间很多人做哦

Posted by ArXoR at 2005-03-02 21:44:02 on Problem 1088
In Reply To:想不出我的代码为什么会超时...希望大家多多指教 Posted by:lc86 at 2005-03-02 12:15:02
> #include <stdio.h>
> #include <memory.h>
> #include <stdlib.h>
> #include <malloc.h>
> #define map(x,y) *(map+(x)*n+(y));
> int *map;
> int n,m;
> int main()
> {
>  int *value,*map,real;
>  int i,j,x,y,ii,jj,b=0,k;
>  scanf("%d%d",&n,&m);
>  map=(int *)malloc(n*m*sizeof(int));
>  value=(int *)malloc(n*m*sizeof(int));
>  memset(value,0,n*m*sizeof(int));
>  for(i=0;i<n*m;i++)
>    scanf("%d",map+i);
>  b=1;
>  while(b)
>  {
>   b=0;ii=0;
>   for(i=0;i<m;i++)
>   {
>    for(j=0;j<n;j++,ii++)
>       for(k=0;k<4;k++)
> 	{
> 	 x=j;y=i;
> 	 switch(k)
> 	 {
> 	  case 0:y++;jj=ii+n;break;
> 	  case 1:x++;jj=ii+1;break;
> 	  case 2:y--;jj=ii-n;break;
> 	  case 3:x--;jj=ii-1;break;
> 	  default: return 1;
> 	 }
> 	 if((x<0)||(y<0)||(x>=n)||(y>=m))continue;
> 	 if(*(map+ii)<*(map+jj)&&(*(value+jj)+1>*(value+ii)))
> 	 {
> 	  value[ii]=value[jj]+1;
> 	  b=1;
> 	 }
> 	}
>   }
>  }
>  for(i=0;i<n*m;i++)
>  {
>   if(*(value+i)>b)b=*(value+i);
>  }
>  printf("%d",b+1);
>  free(map);
>  free(value);
>  return 1;
> }

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