1 #include<stdio.h> 2 #include<string.h> 3 #include<algorithm> 4 #include<queue> 5 using namespace std; 6 int mark[205][205]; 7 char map[205][205]; 8 int fx[4][2]={{1,0},{-1,0},{0,1},{0,-1}}; 9 int num[205][205],num1[205][205],num2[205][205]; 10 struct node 11 { 12 int x,y; 13 }last,now; 14 int n,m; 15 queue<node>q; 16 void bfs(int a,int b) 17 { 18 while(!q.empty()) 19 q.pop(); 20 last.x=a;last.y=b; 21 q.push(last); 22 while(!q.empty()) 23 { 24 last=q.front(); 25 q.pop(); 26 for(int i=0;i<4;i++) 27 { 28 now.x=last.x+fx[i][0]; 29 now.y=last.y+fx[i][1]; 30 if(now.x>=0&&now.x<=n&&now.y>=0&&now.y<=m&&mark[now.x][now.y]==0&&map[now.x][now.y]!='#') 31 { 32 q.push(now); 33 mark[now.x][now.y]=1; 34 num[now.x][now.y]=num[last.x][last.y]+1; 35 } 36 } 37 } 38 } 39 int main() 40 { 41 while(~scanf("%d %d",&n,&m)) 42 { 43 int i,j,a,b,c,d; 44 for(i=0;i<n;i++) 45 scanf("%s",&map[i]); 46 for(i=0;i<n;i++) 47 { 48 for(j=0;j<m;j++) 49 { 50 if(map[i][j]=='Y') 51 { 52 a=i;b=j; 53 } 54 if(map[i][j]=='M') 55 { 56 c=i;d=j; 57 } 58 } 59 } 60 memset(mark,0,sizeof(mark)); 61 memset(num,0,sizeof(num)); 62 memset(num1,0,sizeof(num1)); 63 bfs(a,b); 64 for(i=0;i<n;i++) 65 { 66 for(j=0;j<m;j++) 67 { 68 num1[i][j]=num[i][j]; 69 } 70 } 71 memset(num,0,sizeof(num)); 72 memset(mark,0,sizeof(mark)); 73 memset(num2,0,sizeof(num2)); 74 bfs(c,d); 75 for(i=0;i<n;i++) 76 { 77 for(j=0;j<m;j++) 78 { 79 num2[i][j]=num[i][j]; 80 } 81 } 82 memset(num,0,sizeof(num)); 83 memset(mark,0,sizeof(mark)); 84 int min=10000000; 85 for(i=0;i<n;i++) 86 { 87 for(j=0;j<m;j++) 88 { 89 num[i][j]=num1[i][j]+num2[i][j]; 90 if(map[i][j]=='@'&&min>num[i][j]) 91 min=num[i][j]; 92 } 93 } 94 printf("%d ",min*11); 95 } 96 return 0; 97 }