题解 | 计算某字符出现次数

s = input().strip()
c = input().strip()

count = 0

if c.isalpha():
    # 统计大小写形态的总次数
    lower_c = c.lower()
    upper_c = c.upper()
    count = s.count(lower_c) + s.count(upper_c)
elif c.isdigit():
    # 统计数字的出现次数
    count = s.count(c)

print(count)