题解 | #统计大写字母个数#

while True:
    try:
        a = input()
        res = 0
        b =  ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z']
        for i in a:
            if i in b:
                res+=1
        print(res)
    except:
        break