def solution(s):
text = s.split(' ') #공백 구조 유지를 위해 ' ' 로 나누어줌
new_text = []
for i in text: # try
word =''
for idx,j in enumerate(i): # 0 1 2 t r y
if idx % 2 == 0:
word+=j.upper()
else:
word+=j.lower()
new_text.append(word)
#print(new_text)
return ' '.join(new_text)