- Efficient Teams A coding competition is being organized on the HackerRank platform. 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 skill[i]. A total of ( n/2) teams are to be formed, such that the total skill of each team 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, 3], the efficiency of the team is 1∗3=3. Find the sum of efficiencies of all teams that can be formed satisfying the criteria. If there is no way to create teams that satisfy the conditions, return −1. Note: It can be shown that the answer is always unique. Example The skills of the candidates are skill =[1,2,3,2]. They can be paired as [[1, 3], [2, 2]]. The sum of skills for each team is the same, l.e., 4. The efficiency is computed as: - Efficiency of [1,3]=1∗3=3 - Efficiency of [2,2]=2∗2=4 Return the sum of efficiencies, 3+4=7. Function Description Complete the function getTotalEfficiency in the editor below. getTotalEfficiency has the followino naramatam. Function Desaription Complete the function getTotalEfificiengy in the editor below. getTotalEfficiency has the following parameter: int skill[n]: the skill of each candidate Returns long int: the sum of the efficiencies Constraints −1≤n≤105 - 1≤ skilli0m 105 - n is even. - It is guaranteed that the answer is unique. Input Format For Custom Testing - Sample Case 0 Sample Input For Custom Testing Sample output 13 Explanation Form teams as [1,5],[4,2]. The sums of each pair are 6 . Returns long int: the sum of the efficiencies Constraints - 1≤n≤105 - 1≤skili[]≤105 - n is even. - It is guaranteed that the answer is unique. Input Format For Custom Testing Vample Case 0 Sample Input For Custom Testing STDIN 45421​→​ FUNCTION − skill[] size, n skill =[5,4,​​ Sample Output 13 Explanation Form teams as [11,5],[4,2]. The sums of each pair are 6. The efficiency is computed as: - Efficiency of [1,5]=1∗5=5 - Efficiency of [4,2]=4∗2=8 Sample Case 1 # Complete the 'getTotalefficiency' function below. # # The function is expected to return a LONG_INTEGER. # The function accepts INTEGER_ARRAY skill as parameter. # 8 def getTotalefficiency(skill): 19 # Write your code here 21> if __name == '__main__' 20⋅…

Using the knowledge of computational language in python it is possible to write code that Function Description Complete the function getTotalEfficiency in the editor below.

def getEfficiency(li):

 s=sum(li)

 if s%2:

   return -1

 sum_half = s//2

 skills_dict={}

 for i in li:

   if skills_dict.get(i):

     skills_dict[i]+=1

   else:

     skills_dict[i]=1

 res=0

 for i,j in skills_dict.items():

   key1 = i

   key2 = sum_half - i

   if skills_dict.get(key2):

     if j == skills_dict[key2]:

       res = res + j * (key1*key2)

     else:

       return -1

   else:

     return -1

 return res//2

n=int(input ())

li=list(map(int,input().split(" ")))

print(getEfficiency(li))

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