공부하자 동진아

def solve(a):
    ans = sum(a)
    return ans

c = int(input())

for i in range(c):
    count = 0
    answer = 0
    score = list(map(int, input().split()))
        
    avg = sum(score[1:]) / score[0]
    for x in score[1:]:
        if x > avg:
            count += 1
            
    answer = (count / score[0]) * 100
    
    print('%.3f' % answer + "%")

n = int(input())
ox = []

for i in range(n):
    ox.append(input())

for x in ox:
    count = 0
    answer = 0
    for k in range(len(x)):
        if x[k] == "O":
            count += 1
            answer += count
        else:
            count = 0
            
    print(answer)

def distance(hand, number):
    keypad = [[1, 2, 3], [4, 5, 6], [7, 8, 9], ['*', 0, '#']]
    hand_ = ""
    num_ = ""
    
    for i in range(len(keypad)):
        for j in range(len(keypad[0])):
            if keypad[i][j] == hand:
                hand_coord = (i, j)
            if keypad[i][j] == number:
                num_coord = (i, j)
    return abs(hand_coord[0]-num_coord[0]) + abs(hand_coord[1]-num_coord[1])

def solution(numbers, hand):
    answer = ""
    left = "*"
    right = "#"

    for number in numbers:
        if number in [1, 4, 7]:
            answer += "L"
            left = number
        elif number in [3, 6, 9]:
            answer += "R"
            right = number
        else:
            left_d = distance(left, number)
            right_d = distance(right, number)
            if (left_d < right_d) or ((left_d == right_d) and (hand == "left")):
                answer += "L"
                left = number
            elif (left_d > right_d) or ((left_d == right_d) and (hand == "right")):
                answer += "R"
                right = number
    return answer