vector<vector<int>> generate(int num)

      {

          vector<vector<int>> result;

          vector<int> array;

          for (int i = ; i <= num; i++)

          {

              for (int j = i - ; j > ; j--)

              {

                  array[j] = array[j - ] + array[j];

              }

              array.push_back();

              result.push_back(array);

          }

      }