poj 1656 Counting Black

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//简单的模拟题，按部就班地按照题目的意思做就很容易了，给定一定范围，将这范围内的地方涂黑或者涂白，最后统计黑色方格的个数！ #include <iostream>#include <string>using namespace std;int grid[105][105];int main(){    int i, j, tc, x, y, l, boardx, boardy, ans = 0;    string str;    for (i = 1; i <= 100; i++)       for (j = 1; j <= 100; j++)            grid[i][j] = 0;    cin >> tc;    while (tc--)    {          cin >> str >> x >> y >> l;          boardx = x+l-1;          boardy = y+l-1;          if (str == "BLACK")          {               for (i = x; i <= boardx; i++)                  for (j = y; j <= boardy; j++)                  {                      if (grid[i][j] == 0)                          grid[i][j] = 1;                  }          }          else if (str == "WHITE")          {               for (i = x; i <= boardx; i++)                  for (j = y; j <= boardy; j++)                  {                      if (grid[i][j] == 1)                          grid[i][j] = 0;                  }          }          else if (str == "TEST")          {               for (i = x; i <= boardx; i++)                  for (j = y; j <= boardy; j++)                  {                      if (grid[i][j] == 1)                          ans++;                  }               cout << ans << endl;               ans = 0;          }    }        system("pause");}