1037.cpp

static int x = []() {std::ios::sync_with_stdio(false); cin.tie(0); return 0; }();
class Solution 
{
public:
    bool isBoomerang(vector<vector<int>>& p) 
    {
        return (p[0][0] - p[1][0]) * (p[0][1] - p[2][1]) != (p[0][0] - p[2][0]) * (p[0][1] - p[1][1]);
    }
};