Problem3334--【Div4】按字符串长度排序连接字符串

3334: 【Div4】按字符串长度排序连接字符串

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Time Limit : 1.000 sec  Memory Limit : 128 MB

SubmitSolved: 7Submit Num: 10Statistics

Description

Sample Input Copy 

3
tc
oder
a

Sample Output Copy 

atcoder

Source/Category

Div4 字符串 排序 
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