leetcode

0 class Solution {

1 public:

2 bool canChoose(const vector<vector<int>> &groups, const vector<int> &nums) const {

3 const int n = size(groups);

4 int group = 0, crnt = 0, start = 0;

5 for (int i = 0; i < size(nums) && group < n; i++) {

6 if (nums[i] != groups[group][crnt])

7 crnt = 0, i = start, start++;

8 else if (++crnt == size(groups[group]))

9 group++, crnt = 0, start = i;

10 }

11

12 return group == n;

13 }

14 };