# 2024年9月25日
s = input()
ls = []
if '"' not in s:
    for i in s.split():
        ls.append(i)
else:
    ss = s.split('"')
    for i in range(len(ss)):
        if i%2 == 1:
            ls.append(ss[i])
        else:
            ls += ss[i].split()
print(len(ls))
for i in ls:
    print(i)