Untitled

class Solution {
public:
    vector<int> generateRow(int row){
        int element = 1;
        vector<int> ans;
        ans.push_back(1);
        for(int col=1;col<row;col++){
            element = element*(row-col);
            element/=col;
            ans.push_back(element);
        }
        return ans;
    }
vector<vector<int>> generate(int numRows){
    vector<vector<int>> res;
    for(int i=1;i<=numRows;i++){
        res.push_back(generateRow(i));
    }
    return res;
}
};