좌충우돌 IT이야기

📂 그룹 단어 체커

www.acmicpc.net/problem/1316

n = int(input())
cnt = 0

for i in range(n):
    temp = input()
    if len(temp) > 1:
        for x in str(temp):
            if temp.count(x) > 1:
                if temp == temp.replace(x*temp.count(x), ''):
                    break
        else:
            cnt += 1
    else:
        cnt += 1

print(cnt)