group ot 10

sequence_of_numbers = input().split(", ")
g_10 = []
g_20 = []
g_30 = []
g_40 = []
g_50 = []
max_num = 0
while len(sequence_of_numbers) != 0:

    for number in sequence_of_numbers:
        if int(number) > max_num:
            max_num = int(number)

        if 0 < int(number) <= 10:
            g_10.append(int(number))
            sequence_of_numbers.remove(number)

        elif 10 < int(number) <= 20:
            g_20.append(int(number))
            sequence_of_numbers.remove(number)

        elif 20 < int(number) <= 30:
            g_30.append(int(number))
            sequence_of_numbers.remove(number)

        elif 30 < int(number) <= 40:
            g_40.append(int(number))
            sequence_of_numbers.remove(number)

        elif 40 < int(number) <= 50:
            g_50.append(int(number))
            sequence_of_numbers.remove(number)

print(f"Group of 10's: {g_10}")
print(f"Group of 20's: {g_20}")
print(f"Group of 30's: {g_30}")
print(f"Group of 40's: {g_40}")
print(f"Group of 50's: {g_50}")