def solution(n, words):
answer = [0,0]
for w in range(0,len(words)):
if (words[w] in words[0:w]) or (w>0 and (words[w][0]!=words[w-1][-1])):
w=w+1
if (w%n)==0:
answer[0]=(w%n)+n
answer[1]=int(w/n)
break
else:
answer[0]=(w%n)
answer[1]=int(w/n)+1
break
return answer
출처: 프로그래머스