SRM550 Div2 Easy

250

やるだけ

class EasyConversionMachine {
public:
  string isItPossible(string O, string F, int k)
  {
    const int size = O.size();

    int cnt = 0;
    for (int i = 0; i < size; ++i) {
      cnt += (O[i] != F[i]);
    }

    const string S = "POSSIBLE";
    const string T = "IMPOSSIBLE";

    if (cnt > k) return T;
    if ((cnt - k) % 2 == 0) return S;
    return T;
  }
};