# https://leetcode.com/problems/uncommon-words-from-two-sentences/

class Solution:
    def uncommonFromSentences(self, s1: str, s2: str) -> List[str]:
        s1_list = s1.split()
        s2_list = s2.split()
        words_dict = {}
        uncommon_list = []
        only_in_s1 = []
        only_in_s2  = []
        for x1 in s1_list:
            if x1 not in s2_list:
                only_in_s1.append(x1)
            else:
                pass
        for x2 in s2_list:
            if x2 not in s1_list:
                only_in_s2.append(x2)
            else:
                pass
        for word in only_in_s1:
            if word in words_dict:
                words_dict[word] +=1
            else:
                words_dict[word] = 1
        for word in only_in_s2:
            if word in words_dict:
                words_dict[word]+=1
            else:
                words_dict[word] = 1
        for uncommon in words_dict:
            if words_dict.get(uncommon) == 1:
                uncommon_list.append(uncommon)
            else:
                pass
        return uncommon_list