41. 4344 (평균은 넘겠지)

C = int(input())

for _ in range(C) :
    num = 0
    cnt = 0
    arr = list(map(int, input().split()))
    
    for i in arr[1:] :
        num += i  

    num = int(num / arr[0])

    for i in arr[1:] :
        if i > num :
            cnt += 1

  
    print("{:.3f}%".format((cnt/arr[0])*100))