题解 | #统计字符#

import re
while(True):
    try:
        a = input().strip()
        c = 0
        s = 0
        d = 0
        o = 0
        for i in a:
            if re.search('[a-zA-Z]', i):
                c += 1
            elif re.search('\d', i):
                d += 1
            elif re.search(' ', i):
                s += 1
            else:
                o += 1
        print(c)
        print(s)
        print(d)
        print(o)
    except:
        break