1
class Solution {
2
 public:
3
  vector<int> getRow(int rowIndex) {
4
    vector<int> ans(rowIndex + 1, 0);
5
    ans[0] = 1;
6
    for (int i = 1; i < rowIndex + 1; i++) {
7
      for (int j = i; j >= 1; j--) {
8
        ans[j] = ans[j] + ans[j - 1];
9
      }
10
    }
11
    return ans;
12
  }
13
};