题解 | #统计字符#

import sys

# 定义常量
s1  = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
s2  = " "
s3  = "1234567890"
t1 = 0
t2 = 0
t3 = 0
t4 = 0
for i in sys.stdin.readline():
    if i.upper() in s1:
        t1 = t1 + 1
    elif i in s2:
        t2 = t2 + 1
    elif i in s3:
        t3 = t3 + 1
    elif i in "\n":
        pass
    else:
        t4 = t4 + 1 
print(t1)
print(t2)
print(t3)
print(t4)