leetcode

0 class Solution {

1 public:

2 int countLatticePoints(vector<vector<int>> &circles) {

3 unordered_set<int> us;

4

5 for (const auto &circle : circles) {

6 for (int i = circle[0] - circle[2]; i <= circle[0] + circle[2]; i++) {

7 for (int j = circle[1] - circle[2]; j <= circle[1] + circle[2]; j++) {

8 const int a = (i - circle[0]) * (i - circle[0]);

9 const int b = (j - circle[1]) * (j - circle[1]);

10 const int c = circle[2] * circle[2];

11

12 if (a + b <= c) us.insert(i * 200 + j);

13 }

14 }

15 }

16

17 return size(us);

18 }

19 };