【題目敘述】https://zerojudge.tw/ShowProblem?problemid=e706
Python code
Case = 1
while True:
try:
n = int(input())
ans = 0
for _ in range(n):
dic = {}
s = input()
for c in s:
dic[c] = dic.get(c, 0) + 1
if len(dic.keys()) >= 2 and len(dic.keys()) == len(set(dic.values())):
ans += 1
print(f"Case {Case}: {ans}")
Case += 1
except:
break