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跪求帮忙的垃圾

Posted by xiaolver at 2018-03-24 18:58:46 on Problem 2251
#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;
int limit[31][31][31];
int vis[31][31][31];
int a,b,c,ans,si,sj,sk,bi,bj,bk;
char chr;
void dfs(int i, int j, int k )
{if(vis[bi][bj][bk]==1)
{

ans=limit[bi][bj][bk]<ans?limit[bi][bj][bk]:ans;
vis[bi][bj][bk]=0;
}

if(i>0&&vis[i-1][j][k]==0)
{
    vis[i-1][j][k]=1;
    limit[i-1][j][k]=limit[i][j][k]+1;

    dfs(i-1,j,k);

}
if(j>0&&vis[i][j-1][k]==0)
{   vis[i][j-1][k]=1;
    limit[i][j-1][k]=limit[i][j][k]+1;

    dfs(i,j-1,k);

}
if(k>0&&vis[i][j][k-1]==0)
{
        vis[i][j][k-1]=1;
    limit[i][j][k-1]=limit[i][j][k]+1;


    dfs(i,j,k-1);


}
if(i<a-1&&vis[i+1][j][k]==0)
{
    vis[i+1][j][k]=1;
    limit[i+1][j][k]=limit[i][j][k]+1;

    dfs(i+1,j,k);

}
if(j<b-1&&vis[i][j+1][k]==0)
{
    vis[i][j+1][k]=1;
    limit[i][j+1][k]=limit[i][j][k]+1;

    dfs(i,j+1,k);

}
if(k<c-1&&vis[i][j][k+1]==0)
{
    vis[i][j][k+1]=1;
    limit[i][j][k+1]=limit[i][j][k]+1;

    dfs(i,j,k+1);
}
}
int main()
{
    while(~scanf("%d%d%d",&a,&b,&c)&&a!=0&&b!=0&&c!=0)
    {
        for(int i=0;i<a;i++)
            for(int j=0;j<b;j++)
            for(int k=0;k<c;k++)
            vis[i][j][k]=0;
        ans=1e9;
        getchar();
      for(int i=0;i<a;i++)
      {

          for(int j=0;j<b;j++)
          {
              for(int k=0;k<c;k++)
              {
                  scanf("%c",&chr);
                  if(chr=='S')
                    {
                        si=i;
                        sj=j;
                        sk=k;

                        limit[i][j][k]=0;
                        vis[i][j][k]=1;
                    }
                  else if(chr=='#')
                    {
                        limit[i][j][k]=-1;
                        vis[i][j][k]=-1;
                    }
                  else if(chr=='E')
                  {
                      limit[i][j][k]=0;
                      bi=i;
                      bj=j;
                      bk=k;
                  }
                  else
                    {
                        limit[i][j][k]=0;
                    }
              }getchar();

          }
          getchar();

      }
      dfs(si,sj,sk);
      if(limit[bi][bj][bk]==0)
        cout<<"Trapped!"<<endl;
        else
            cout<<"Escaped in "<<ans<<" minute(s)."<<endl;
    }
    return 0;
}

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