SRM412 Div2 Easy

250

やるだけ

class TrueSpace {
public:
  long long calculateSpace(vector <int> sizes, int clusterSize)
  {
    lli sum = 0;

    for (int i = 0; i < sizes.size(); ++i) {
      lli s = sizes[i] / clusterSize + (bool)(sizes[i] % clusterSize);
      sum += s * clusterSize;
    }

    return sum;
  }
};