姓名PK
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题目描述
输入两人的姓名进行比较，按从小到大的顺序输出。
输入格式
输入两行，为两个英文单词或中文拼音的字符串。
输出格式
输出两行，将这两个字符串按从小到大的顺序输出。
mouse
elephant
elephant
mouse