Credit System

n = int(input())

totalGrades = 0.0
totalCredits = 0.0

for i in range(n):
    number = int(input())
    grade = number % 10
    credit = int(number / 10)

    totalGrades += grade

    if grade == 2:
        credit = 0
    elif grade == 3:
        credit *= 0.50
    elif grade == 4:
        credit *= 0.70
    elif grade == 5:
        credit *= 0.85

    totalCredits += credit

print(f"{totalCredits:.2f}\n{totalGrades / n:.2f}")