题解 | #参数解析#

a = input()
j = 0
k = 0
b = []


for i, d in enumerate(a):
    if d == '"':
        k += 1
        if k%2 == 0:
            b.append(a[j:i])
            j = i + 1
        else:
            b = b + a[j:i].split()
            j = i + 1
if j != len(a):
    b = b + a[j:].split()
print(len(b))
for i in b:
    print(i)