Function CalcTreeCost

library/cpp/par/distr_tree.cpp:32–34

total cost = send time + max ping time + max within group delivery time

    // total cost = send time + max ping time + max within group delivery time
    static float CalcTreeCost(const TDistrTree& a, float sendTime) {
        return (a.Children.ysize() - 1) * sendTime + a.MaxPing + a.Cost;
    }

    struct TDistrTreeCmpCost {
        float SendTime;