//POJ3083 //DFS求靠左墙(右墙)走的路径长+BFS求最短路 //Time:0Ms Memory:716K #include<iostream> #include<cstring> #include<cstdio> #include<queue> using namespace std; #define MAX 45 #define INRANGE(x,y) (x >= 0 && x < n && y >=0 && y < m) struct Point{ int x, y, d; Point(int xx,int yy,int dd):x(xx), y(yy), d(dd){} }; int n,m; int sx,sy; char mize[MAX][MAX]; bool vis[MAX][MAX]; int mov[4][2] = {{0,1},{1,0},{0,-1},{-1,0}}; //东南西北 int dfs(int x, int y, int f, int c) { if(mize[x][y] == 'E') return 1; int px = x + mov[(f+c)%4][0], py = y + mov[(f+c)%4][1]; //左侧(右侧) int fx = x + mov[f][0], fy = y + mov[f][1]; //前侧 if(mize[px][py] == '.' || mize[px][py] == 'E') { f = (f+c)%4; //向左转(向右转) fx = x + mov[f][0], fy = y + mov[f][1]; } while(mize[fx][fy] == '#') { f = (f+4-c)%4; //向右转(向左转) fx = x + mov[f][0], fy = y + mov[f][1]; } return 1 + dfs(fx,fy,f,c); } int bfs(int x, int y) { memset(vis,false, sizeof(vis)); queue<Point> q; q.push(Point(x,y,1)); vis[x][y] = true; while(!q.empty()){ Point cur = q.front(); q.pop(); for(int i =0; i < 4;i++) { int tx = cur.x + mov[i][0]; int ty = cur.y + mov[i][1]; if(INRANGE(tx,ty) && mize[tx][ty] != '#' && !vis[tx][ty]) { if(mize[tx][ty] == 'E') return cur.d+1; q.push(Point(tx,ty, cur.d+1)); vis[tx][ty] = true; } } } return 0; } int main() { //freopen("in.txt","r",stdin); int T; scanf("%d", &T); while(T--){ memset(vis, false, sizeof(vis)); scanf("%d%d", &m,&n); for(int i = 0; i < n;i++) { scanf("%s", mize[i]); for(int j = 0; j < m; j++) if(mize[i][j] == 'S') sx = i, sy = j; } int f = 0; for(; f < 4; f++) { int fx = sx + mov[f][0], fy = sy + mov[f][1]; if(INRANGE(fx,fy) && mize[fx][fy] == '.' || mize[fx][fy] == 'E') break; } printf("%d %d %d\n", dfs(sx, sy, f, 3), dfs(sx, sy, f, 1), bfs(sx,sy)); } return 0; }