题解 | #统计字符#

import sys

for line in sys.stdin:
    a = line.split()
    string = " ".join(a)
    alpha = 0
    blank = 0
    digital = 0
    for i in range(len(string)):
        if string[i] == " ":
            blank += 1
        elif string[i].isalpha():
            alpha += 1
        elif string[i].isdigit():
            digital += 1

    symbol = len(string) - alpha - digital - blank 
    print(alpha)
    print(blank)
    print(digital)
    print(symbol)