题解 | #统计字符#

my_str = input()
letter_count = 0
number_count = 0
space_count = 0
other_count = 0

for char in my_str.strip():
    if char.isalpha():
        letter_count += 1
    elif char.isnumeric():
        number_count += 1
    elif char.isspace():
        space_count += 1
    else:
        other_count += 1

print(letter_count)
print(space_count)
print(number_count)
print(other_count)