백준 1316 (파이썬)

1.문제

https://www.acmicpc.net/problem/1316

2.코드

a=int(input())
for i in range(a):
    b=input()
    for j in range(len(b)-1):
        if b[j]==b[j+1]: pass
        elif b[j] in b[j+1:]:
            a-=1
            break
print(a)

3.코드해설