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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define endl '\n'
  4. #define ull unsigned long long
  5. #define mod 1000000007
  6. #define pb push_back
  7. const int N =2010;
  8. int n,m,sti,stj,ll,rr,vis[N][N];
  9. char g[N][N];
  10. void bfs()
  11. {
  12.     deque<pair<pair<int,int>,pair<int,int>>>q;
  13.     q.push_front({{sti,stj},{ll,rr}});
  14.     vis[sti][stj]=1;
  15.     while(!q.empty())
  16.     {
  17.         int i=q.front().first.first;
  18.         int j= q.front().first.second;
  19.         int l= q.front().second.first;
  20.         int r= q.front().second.second;
  21.         q.pop_front();
  22.         int k=l;
  23.         for(int x=j-1;x>0;x--)
  24.         {
  25.             if(k==0) break;
  26.             k--;
  27.             if(!vis[i][x] && g[i][x]!= '*')
  28.             {
  29.                 q.push_back({{i,x},{k,r}});
  30.                 vis[i][x]=1;
  31.             }
  32.             else break;
  33.         }
  34.         k=r;
  35.         for(int x=j+1;x<=m;x++)
  36.         {
  37.             if(k==0) break;
  38.             k--;
  39.             if(!vis[i][x] && g[i][x]!= '*')
  40.             {
  41.                 q.push_back({{i,x},{l,k}});
  42.                 vis[i][x]=1;
  43.             }
  44.             else break;
  45.         }
  46.         k=i-1;
  47.         while(k>0)
  48.         {
  49.             if(g[k][j]=='*' || vis[k][j]) break;
  50.             q.push_front({{k,j},{l,r}});
  51.             vis[k][j]=1;
  52.             k--;
  53.         }
  54.         k=i+1;
  55.         while(k<=n)
  56.         {
  57.             if(g[k][j]=='*' || vis[k][j]) break;
  58.             q.push_front({{k,j},{l,r}});
  59.             vis[k][j]=1;
  60.             k++;
  61.         }
  62.     }
  63. }
  64. int main()
  65. {
  66.     ios::sync_with_stdio(0);
  67.     cin.tie(0);
  68.     cout.tie(0);
  69.     cin >> n >>m >> sti >> stj >>ll  >>rr;
  70.     for(int i=1;i<=n;i++)
  71.     {
  72.         for(int j=1;j<=m;j++)
  73.             cin >> g[i][j];
  74.     }
  75.     bfs();
  76.     int cnt=0;
  77.     for(int i=1;i<=n;i++)
  78.     {
  79.         for(int j=1;j<=m;j++)
  80.            {
  81.              if(vis[i][j])
  82.                 cnt++;
  83.            }
  84.     }
  85.     cout << cnt;
  86. }
  87.  
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/fy44ZF
language:
C++14 (clang 8.0)
created:
10 days ago
visibility:
public

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