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| #include <iostream>
#include <stdio.h>
#include <string.h>
#include <queue>
#include <algorithm>
using namespace std;
char map[35][35][35];
int vis[35][35][35];
int k,n,m,sx,sy,sz,ex,ey,ez;
int to[6][3] = {{0,0,1},{0,0,-1},{0,1,0},{0,-1,0},{1,0,0},{-1,0,0}};//上下东西南北
struct node
{
int x,y,z,step;
};
int check(int x,int y,int z)//检查是否可走
{
if(x<0 || y<0 || z<0 || x>=k || y>=n || z>=m)//越界判断
return 1;
else if(map[x][y][z] == '#')
return 1;
else if(vis[x][y][z])
return 1;
return 0;
}
int bfs()
{
int i;
node a,next;
queue<node> Q;
a.x = sx,a.y = sy,a.z = sz;
a.step = 0;
vis[sx][sy][sz] = 1;
Q.push(a);
while(!Q.empty())
{
a = Q.front();
Q.pop();
if(a.x == ex && a.y == ey && a.z == ez)
return a.step;
for(i = 0; i<6; i++)
{
next = a;
next.x = a.x+to[i][0];
next.y = a.y+to[i][1];
next.z = a.z+to[i][2];
if(check(next.x,next.y,next.z))
continue;
vis[next.x][next.y][next.z] = 1;
next.step = a.step+1;
Q.push(next);
}
}
return 0;
}
int main()
{
int i,j,r;
while(scanf("%d%d%d",&k,&n,&m),n+m+k)
{
for(i = 0; i<k; i++)
{
for(j = 0; j<n; j++)
{
scanf("%s",map[i][j]);
for(r = 0; r<m; r++)
{
if(map[i][j][r] == 'S')
{
sx = i,sy = j,sz = r;
}
else if(map[i][j][r] == 'E')
{
ex = i,ey = j,ez = r;
}
}
}
}
memset(vis,0,sizeof(vis));
int ans;
ans = bfs();
if(ans)
printf("Escaped in %d minute(s).\n",ans);
else
printf("Trapped!\n");
}
return 0;
}
|