Lily上课时使用字母数字图片教小朋友们学习英语单词，每次都需要把这些图片按照大小（ASCII码值从小到大）排列收好。请大家给Lily帮忙，通过C语言解决。

输入

Lily使用的图片包括"A"到"Z"、"a"到"z"、"0"到"9"。输入字母或数字个数不超过1024。

输出

Lily的所有图片按照从小到大的顺序输出

样例输入

Ihave1nose2hands10fingers

样例输出

0112Iaadeeefghhinnnorsssv

-Lily alphanumeric class pictures to teach children learning English words, every time these pictures arranged according to size (ASCII code value from small to large) away. Please help Lily through the C language to solve. Input Lily picture " A"　through " Z"　to the " a"　to " z" , " 0"　to " 9" . Enter the letters or the number of digits over 1024. Output Lily all the pictures from small to large order of output sample to enter Ihave1nose2hands10fingers sample output 0112Iaadeeefghhinnnorsssv