POJ_3083_Children of the Candy Corn

///BFS+模拟，模拟有点麻烦#include<stdio.h>#include<string.h>#include<queue>using namespace std;queue<int> q;int w,h;char map[45][45];int dl[4][2]={{0,-1},{-1,0},{0,1},{1,0}};int vis[45][45];int dire,k;///指向当前移动方向。 int left(int a,int b,int c,int d){if(a==c&&b==d)return 0;int t=(dire-1+4)%4;if(map[a+dl[t][0]][b+dl[t][1]]!='#'){k++;a=a+dl[t][0];b=b+dl[t][1];dire=t;left(a,b,c,d);}else{if(map[a+dl[dire][0]][b+dl[dire][1]]!='#'){k++;a=a+dl[dire][0];b=b+dl[dire][1];left(a,b,c,d);}else{dire=(dire+1)%4;if(map[a+dl[dire][0]][b+dl[dire][1]]!='#'){k++;a=a+dl[dire][0];b=b+dl[dire][1]; left(a,b,c,d);}else{dire=(dire+1)%4;k++;a=a+dl[dire][0];b=b+dl[dire][1];left(a,b,c,d);}}}return 0;}int right(int a,int b,int c,int d){if(a==c&&b==d)return 0;int t=(dire+1)%4;if(map[a+dl[t][0]][b+dl[t][1]]!='#'){k++;a=a+dl[t][0];b=b+dl[t][1];dire=t;right(a,b,c,d);}else{if(map[a+dl[dire][0]][b+dl[dire][1]]!='#'){k++;a=a+dl[dire][0];b=b+dl[dire][1];right(a,b,c,d);}else{dire=(dire-1+4)%4;if(map[a+dl[dire][0]][b+dl[dire][1]]!='#'){k++;a=a+dl[dire][0];b=b+dl[dire][1]; right(a,b,c,d);}else{dire=(dire-1+4)%4;k++;a=a+dl[dire][0];b=b+dl[dire][1];right(a,b,c,d);}}}return 0;}int bfs(int a,int b,int c,int d){memset(vis,0,sizeof(vis));vis[a][b]=1;q.push(a);q.push(b);while(!q.empty()){int x,y,i;x=q.front();q.pop();y=q.front();q.pop();for(i=0;i<4;i++){int m,n;m=x+dl[i][0];n=y+dl[i][1];if(m>=0&&m<h&&n>=0&&n<w&&map[m][n]!='#'&&vis[m][n]==0){vis[m][n]=vis[x][y]+1;if(m==c&&n==d){k=vis[m][n];return 0;}q.push(m);q.push(n);}}}return 0;}int main(){int cas;scanf("%d",&cas);while(cas--){scanf("%d%d",&w,&h);int i,s1,s2,e1,e2,j;for(i=0;i<h;i++){scanf("%s",map[i]);for(j=0;j<w;j++){if(map[i][j]=='S'){s1=i;s2=j;}if(map[i][j]=='E'){e1=i;e2=j;}}}k=1;if(s1==0)dire=3;else if(s1==h-1)dire=1;else if(s2==0)dire=2;elsedire=0;j=dire;left(s1,s2,e1,e2);printf("%d ",k);dire=j;k=1;right(s1,s2,e1,e2);printf("%d ",k);bfs(s1,s2,e1,e2);printf("%d/n",k);while(!q.empty())q.pop();}return 0;}