poj1164

#include<iostream>
using namespace std;
int data[51][51];
int vis[51][51];
int roomnum;
int maxroom;
int m,n;
typedef struct node
{
    int x;
    int y;
}node;
node queue[1000];
int sum;
void bfs(int x, int y)
{
    sum=0;
    int tail,head;
    head=tail=0;
    vis[x][y]=1;
    node startnode;
    startnode.x=x;
    startnode.y=y;
    queue[tail++]=startnode;
    sum++;
    while(head!=tail)
    {
        node cur,next;
        cur=queue[head++];
        if(!(data[cur.x][cur.y]&1)&&cur.y-1>=0&&vis[cur.x][cur.y-1]==0)
        {
            next.x=cur.x;
            next.y=cur.y-1;
            vis[next.x][next.y]=1;
            queue[tail++]=next;
            sum++;
        }
        if(!(data[cur.x][cur.y]&2)&&cur.x-1>=0&&vis[cur.x-1][cur.y]==0)
        {
            next.x=cur.x-1;
            next.y=cur.y;
            vis[next.x][next.y]=1;
            queue[tail++]=next;
            sum++;
        }
        if(!(data[cur.x][cur.y]&4)&&cur.y+1<n&&vis[cur.x][cur.y+1]==0)
        {
            next.x=cur.x;
            next.y=cur.y+1;
            vis[next.x][next.y]=1;
            queue[tail++]=next;
            sum++;
        }
        if(!(data[cur.x][cur.y]&8)&&cur.x+1<m&&vis[cur.x+1][cur.y]==0)
        {
            next.x=cur.x+1;
            next.y=cur.y;
            vis[next.x][next.y]=1;
            queue[tail++]=next;
            sum++;
        }
    }
}

int main()
{
    //freopen("input.txt","r",stdin);
    cin>>m>>n;
    for(int i=0;i<m;i++)
        for(int j=0;j<n;j++)
            cin>>data[i][j];
    for(int i=0;i<m;i++)
        for(int j=0;j<n;j++)
            vis[i][j]=0;
    maxroom=0;
    for(int i=0;i<m;i++)
    {
        for(int j=0;j<n;j++)
        {
            if(vis[i][j]==0)
            {
                bfs(i,j);
                if(sum>maxroom)
                    maxroom=sum;
                roomnum++;
            }
        }
    }
    cout<<roomnum<<endl;
    cout<<maxroom<<endl;
    return 0;
}