answer.code:3:1: error: ‘string’ does not name a type
    3 | string grid[N];
      | ^~~~~~
answer.code: In function ‘int sysidy(int, int)’:
answer.code:14:24: error: ‘grid’ was not declared in this scope
   14 |                 res += grid[i][j] == '#';
      |                        ^~~~
answer.code:16:24: error: ‘grid’ was not declared in this scope
   16 |                 res += grid[i][j - 1] == '#';
      |                        ^~~~
answer.code:18:24: error: ‘grid’ was not declared in this scope
   18 |                 res += grid[i - 1][j] == '#';
      |                        ^~~~
answer.code:20:24: error: ‘grid’ was not declared in this scope
   20 |                 res += grid[i - 1][j - 1] == '#';
      |                        ^~~~
answer.code: In function ‘int cnt(int, int, int, int)’:
answer.code:25:12: error: ‘abs’ was not declared in this scope
   25 |         if(abs(i0 - i1) > 1 || abs(j0 - j1) > 1)
      |            ^~~
answer.code:31:25: error: ‘min’ was not declared in this scope
   31 |                 int j = min(j0, j1);
      |                         ^~~
answer.code:34:33: error: ‘grid’ was not declared in this scope
   34 |                         res += (grid[i0][j] == '#');
      |                                 ^~~~
answer.code:36:33: error: ‘grid’ was not declared in this scope
   36 |                         res += (grid[i0 - 1][j] == '#');
      |                                 ^~~~
answer.code:41:25: error: ‘min’ was not declared in this scope
   41 |                 int i = min(i0, i1);
      |                         ^~~
answer.code:44:33: error: ‘grid’ was not declared in this scope
   44 |                         res += (grid[i][j0] == '#');
      |                                 ^~~~
answer.code:46:33: error: ‘grid’ was not declared in this scope
   46 |                         res += (grid[i][j0 - 1] == '#');
      |                                 ^~~~
answer.code:49:17: error: ‘min’ was not declared in this scope
   49 |         int i = min(i0, i1);
      |                 ^~~
answer.code:52:16: error: ‘grid’ was not declared in this scope
   52 |         return grid[i][j] == '#';
      |                ^~~~