ss

number_of_turns = int(input())
result = 0
from_0_to_9 = 0
from_10_to_19 = 0
from_20_to_29 = 0
from_30_to_39 = 0
from_40_to_50 = 0
invalid_number = 0

for each_turn in range(1, number_of_turns + 1):
    number = int(input())
    if 0 <= number <= 9:
        result += number * 0.2
        from_0_to_9 += 1
    elif 10 <= number <= 19:
        result += number * 0.3
        from_10_to_19 += 1
    elif 20 <= number <= 29:
        result += number * 0.4
        from_20_to_29 += 1
    elif 30 <= number <= 39:
        result += 50
        from_30_to_39 += 1
    elif 40 <= number <= 50:
        result += 100
        from_40_to_50 += 1
    else:
        result /= 2
        invalid_number += 1

print(f'{result:.2f}')
print(f"From 0 to 9: {from_0_to_9/number_of_turns*100:.2f}%")
print(f"From 10 to 19: {from_10_to_19/number_of_turns*100:.2f}%")
print(f"From 20 to 29: {from_20_to_29/number_of_turns*100:.2f}%")
print(f"From 30 to 39: {from_30_to_39/number_of_turns*100:.2f}%")
print(f"From 40 to 50: {from_40_to_50/number_of_turns*100:.2f}%")
print(f"Invalid numbers: {invalid_number/number_of_turns*100:.2f}%")