#include #include /** * 1402. Reducing Dishes * * A chef has collected data on the satisfaction level of his n dishes. Chef can cook any dish in 1 unit of time. * Like-time coefficient of a dish is defined as the time taken to cook that dish including previous dishes multiplied by its satisfaction level i.e. time[i] * satisfaction[i]. * Return the maximum sum of like-time coefficient that the chef can obtain after dishes preparation. * Dishes can be prepared in any order and the chef can discard some dishes to get this maximum value. */ class Solution { public: static int maxSatisfaction(const std::vector& sa) { const int n = sa.size(); std::vector s(n); std::partial_sort_copy(sa.begin(), sa.end(), s.begin(), s.end()); int ans = std::max(0, s[n - 1]); for (int i = n - 2, cur = s[n - 1]; i >= 0; --i) ans = std::max(ans, cur += (s[i] += s[i + 1])); return ans; } }; int main() { Solution::maxSatisfaction({-1,-8,0,5,-9}); return 0; }