1375.cpp (247B)
1 class Solution { 2 public: 3 int numTimesAllBlue(const vector<int> &flips) { 4 int right = 0, res = 0; 5 for (int i = 0; i < flips.size(); ++i) 6 res += (right = max(right, flips[i])) == i + 1; 7 return res; 8 } 9 };