백준 4344. 평균은 넘겠지 Python 수학 사칙연산 브론즈1

t = int(input())
for tc in range(t):
    arr = list(map(int,input().split()))
    n = arr[0]
    sum_v = 0
    cnt = 0
    for i in range(1,n+1):
       sum_v += arr[i]
    for i in range(1,n+1):
        if arr[i] - sum_v/n > 0:
            cnt += 1
    print(f'{(cnt/n*100):0.3f}%')