412Div.2Easy
前に解いたやつ
class TrueSpace { public: long long calculateSpace( vector <int> sizes, int clusterSize ) { ll res = 0; for (int i = 0; i < sizes.size(); i++) { if (sizes[i] == 0) continue; if (sizes[i] < clusterSize) { res += clusterSize; continue; } if (sizes[i] % clusterSize == 0) res += sizes[i]; else res += (sizes[i] / clusterSize + 1) * clusterSize; } return res; } };