题解 | #参数解析#

s = input()
res = []
temp = ""
i = 0
while i < len(s):
    if s[i] == " ":
        res.append(temp)
        temp = ""
    elif s[i] == '"':
        i += 1
        while s[i] != '"':
            temp += s[i]
            i += 1
    else:
        temp += s[i]
    i += 1
res.append(temp)
print(len(res))
print("\n".join(res))