Maximum Performance of a Team

You are given two integers n and k and two integer arrays speed and efficiency, both of length n. There are n engineers numbered from 1 to n, where speed[i] and efficiency[i] represent the speed and efficiency of the i^th engineer respectively.

Choose at most k different engineers out of the n engineers to form a team with the maximum performance.

The performance of a team is the sum of its engineers' speeds multiplied by the minimum efficiency among its engineers.

Return the maximum performance of this team. Since the answer can be a huge number, return it modulo 10^9 + 7.

Example 1
Inputn = 6, speed = [2,10,3,1,5,8], efficiency = [5,4,3,9,7,2], k = 2
Output60
Selecting engineer 2 with speed 10 and efficiency 4 and engineer 5 with speed 5 and efficiency 7 gives performance (10 + 5) * min(4, 7) = 60.
Example 2
Inputn = 6, speed = [2,10,3,1,5,8], efficiency = [5,4,3,9,7,2], k = 3
Output68
Selecting engineers 1, 2, and 5 gives performance (2 + 10 + 5) * min(5, 4, 7) = 68.

Constraints

  • 1 <= k <= n <= 10^5
  • speed.length == n
  • efficiency.length == n
  • 1 <= speed[i] <= 10^5
  • 1 <= efficiency[i] <= 10^8

Asked at 8 companies

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