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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.     int h, w, x, y;
  6.     cin >> h >> w >> x >> y;
  7.     char grid[h][w];
  8.  
  9.     // Input the grid
  10.     for(int i = 0; i < h; i++) {
  11.         for(int j = 0; j < w; j++) {
  12.             cin >> grid[i][j];
  13.         }
  14.     }
  15.  
  16.     // Convert (x, y) to 0-indexed
  17.     x--;
  18.     y--;
  19.  
  20.     int a = 0;  // Start with 0, will count the starting point separately
  21.  
  22.     // If the starting point is '.', count it as well
  23.     if (grid[x][y] == '.') {
  24.         a++;
  25.     }
  26.  
  27.     // Check to the right of (x, y)
  28.     int n = y + 1;
  29.     while (n < w && grid[x][n] == '.') {
  30.         a++;
  31.         n++;
  32.     }
  33.  
  34.     // Check to the left of (x, y)
  35.     n = y - 1;
  36.     while (n >= 0 && grid[x][n] == '.') {
  37.         a++;
  38.         n--;
  39.     }
  40.  
  41.     // Check below (x, y)
  42.     int m = x + 1;
  43.     while (m < h && grid[m][y] == '.') {
  44.         a++;
  45.         m++;
  46.     }
  47.  
  48.     // Check above (x, y)
  49.     m = x - 1;
  50.     while (m >= 0 && grid[m][y] == '.') {
  51.         a++;
  52.         m--;
  53.     }
  54.  
  55.     // Output the result
  56.     cout << a;
  57.  
  58.     return 0;
  59. }
  60.  
Success #stdin #stdout 0.01s 5284KB
comments ()
stdin 
5 5 4 2
.#..#
#.###
##...
#..#.
#.###
stdout 
3
https://ideone.com/unwAoE
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

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