5_6_7_zadachi

# Задача 5 (FOR)
start_index = int(input())
stop_index = int(input())
for index in range(start_index, stop_index + 1):
    ascii_char = chr(index)
    print(ascii_char, end=' ')


# Задача 6 (Triple FOR) ord('a')
n = int(input())
collection = []
for code in range(ord('a'), n + ord('a')):
    collection.append(chr(code))
for first_char in collection:
    for second_char in collection:
        for third_char in collection:
            print(f'{first_char}{second_char}{third_char}')


# Задача 7 (FOR)
CAPACITY = 255  # liters
n_lines = int(input())
total_liters = 0
for line in range(1, n_lines + 1):
    add_liters = int(input())
    if total_liters + add_liters > CAPACITY:
        print('Insufficient capacity!')
        continue
    else:
        total_liters += add_liters
print(total_liters)