message: Update champagne-tower.cpp
diff: class Solution {
  public:
  double champagneTower(int poured, int query_row, int query_glass) {
  - vector<double> result(query_row + 2);
  + vector<double> result(1 + query_row);
  result[0] = poured;
  for (int i = 1; i <= query_row; ++i) {
  for(int j = i; j >= 0; --j) {
  - result[j] = max(0.0, (result[j] - 1) / 2);
  - result[j + 1] += result[j];
  + result[j] = max((result[j] - 1), 0.0) / 2 +
  + max((result[j - 1] - 1), 0.0) / 2;
  }
  }
  - return min(1.0, result[query_glass]);
  + return min(result[query_glass], 1.0);
  }
  };
  