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#include<bits/stdc++.h>
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using namespace std;
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const int N=510;
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int n,m;
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char mp[N][N];
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struct node
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{
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    int x,y,step;
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};
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queue<node>q;
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node s,t;
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int dx[4]={1,-1,0,0};
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int dy[4]={0,0,1,-1};
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int vis[N][N];
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bool flag=1;
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int ans=0;
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void bfs()
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{
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    while(!q.empty())
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    {
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        node tmp=q.front();
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        q.pop();
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        // cout<<tmp.x<<' '<<tmp.y<<endl;
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        if(tmp.x==t.x&&tmp.y==t.y)
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        {
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            ans=tmp.step;
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            flag=0;
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            return;
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        }
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        for(int i=0;i<4;i++)
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        {
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            node a=tmp;
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            while(a.x+dx[i]>0&&a.y+dy[i]>0&&a.x+dx[i]<=n&&a.y+dx[i]<=m&&mp[a.x+dx[i]][a.y+dy[i]]=='0'&&(a.x!=t.x||a.y!=t.y))
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            {
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                a.x+=dx[i];
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                a.y+=dy[i];
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            }
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            a.step++;
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            if(a.x==tmp.x&&a.y==tmp.y)
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            {
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            	continue;
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			}
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            if(vis[a.x][a.y])
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            {
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                continue;
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            }
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            if(a.x==t.x&&a.y==t.y)
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            {
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                ans=a.step;
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                flag=0;
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                return;
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            }
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            q.push(a);
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            vis[a.x][a.y]=1;
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        }
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    }
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}
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int main()
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{
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    cin>>n>>m;
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    for(int i=1;i<=n;i++)
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    {
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        for(int j=1;j<=m;j++)
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        {
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            cin>>mp[i][j];
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        }
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    }
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    cin>>s.x>>s.y>>t.x>>t.y;
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    s.step=0;
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    q.push(s);
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    vis[s.x][s.y]=1;
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    bfs();
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    if(flag)
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    {
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        cout<<"No!God!Please no!";
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    }
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    else
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    {
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        cout<<ans;
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    }
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    return 0;
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}