kuangbin简单搜索的b题始终ac不掉，请各位大神看看哪里出错了

Question

原题链接 https://vjudge.net/contest/146840#problem/B

我的代码

#include
#include
#include
#include
#include
#include
using namespace std;
struct D
{
int x,y,z,s;
}beg,next;
queue q;
int l,r,c;
int flag;
int ans;
int dx[6]={-1,0,1,0,0,0};
int dy[6]={0,-1,0,1,0,0};
int dz[6]={0,0,0,0,-1,1};
int vis[35][35][35];
char pic[35][35][35];
int bfs()
{

while(q.size())
{
     beg=q.front();
     q.pop();
    if(pic[beg.x][beg.y][beg.z]=='E'){flag=1;ans=beg.s;return ans;}
    for(int i=0;i<=5;i++)
    {
        next.x=beg.x+dx[i];
        next.y=beg.y+dy[i];
        next.z=beg.z+dz[i];
        if(next.x>=0&&next.x<l&&next.y>=0&&next.y<r&&next.z>=0&&next.z<c&& vis[next.x][next.y][next.z]==0)
        {
            if(pic[next.x][next.y][next.z]=='.'||pic[next.x][next.y][next.z]=='E')
            {
                 vis[next.x][next.y][next.z]=1;
                 next.s=beg.s+1;
                 q.push(next);
            }
        }
    }

}

}
int main()
{
int i,j,k,si,sj,sk;
while(scanf("%d%d%d",&l,&r,&c)!=EOF)
{
if(!l&&!r&&!c)break;
for(i=0;i<l;i++)
{
for(j=0;j<r;j++)
{
scanf("%s",pic[i][j]);
for(k=0;k<=c;k++)
if(pic[i][j][k]=='S'){si=i;sj=j;sk=k;}

        }
        getchar();
    }
   flag=0;ans=0;
   memset(vis,0,sizeof(vis));
   beg.x=sk;beg.y=sj;beg.z=sk;beg.s=0;
   while(q.size())q.pop();
   vis[si][sj][sk]=1;
   q.push(beg);
   bfs();
   if(flag==1)printf("Escaped in %d minute(s).\n",ans);
   else printf("Trapped!\n");

}

return 0;
}

Answer 1

http://blog.csdn.net/lyy289065406/article/details/6647938