summary.cpp

template <typename T>
struct less_than {
private:
    const T a;    
public:
    less_than(const T a) : a(a) { }

    bool operator()(const T &b) {
        return b < a;
    }
};

int summaryProficiency(std::vector<int> a, int n, int m) {
    a.erase(std::remove_if(a.begin(), a.end(), less_than<int>(m)));
    a.resize(n, 0);
    return std::accumulate(a.begin(), a.end(), 0);
}