题解 | #参数解析#

'''
解题思路：
引入一个标志位k=0前面无半个引号，或k=1前面人半个引号
'''
L = input().strip().split()
#print(L)

X = []
TMP = ''
k = 0

for LL in L:
    #print('LL=',LL)

    if LL[0] == '"' and LL[-1] == '"':                # "xyz"
        X.append(LL[1:-1])
    elif LL[0] != '"' and LL[-1] != '"' and k==0:      # xyz
        X.append(LL)
    elif LL[0] != '"' and LL[-1] != '"' and k==1:      # xyz
        TMP = TMP + ' ' + LL
    elif LL[0] == '"' and LL[-1] != '"' and k==0:      # "xyz
        TMP = LL[1:]
        k = 1
    elif LL[0] != '"' and LL[-1] == '"' and k==1:       # xyz"
        TMP = TMP + ' ' +LL[:-1]
        X.append(TMP)
        k = 0

print(len(X))
for XX in X:
    print(XX)