题解 | #参数解析#

inData = list(input())
cmds = []
while inData:
    i = inData.pop(0)
    if i == ' ':
        continue
    c, stop = "", ' '
    if i=='"':
        i = ""
        stop = '"'
    while i != stop:
        c += i
        if not inData:
            break
        i = inData.pop(0)
    cmds.append(c)

print(len(cmds))
for i in cmds:
    print(i)