The participants need to be grouped into teams where each team has exactly two candidates. There are n candidates, where each candidate has a skill denoted by skillfi). A total of (n/2) teams are to be formed, such that the total skill of each tefm is the same. The efficiency of a team is defined as the product of the skill levels of its two members, i. E. , for the skills [1, 31, the efficiency of the team is 1 * 3



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