1318. Minimum Flips to Make a OR b Equal to c.cpp

class Solution {
 public:
  int minFlips(int a, int b, int c) {
    constexpr int kMaxBit = 30;
    int ans = 0;

    for (int i = 0; i < kMaxBit; ++i)
      if ((c >> i & 1) == 1)
        ans += (a >> i & 1) == 0 && (b >> i & 1) == 0;
      else  // (c >> i & 1) == 0
        ans += ((a >> i & 1) == 1) + ((b >> i & 1) == 1);

    return ans;
  }
};