"""
There is a problem with your keyboard: it randomly writes symbols when you are typing a text. You need to clean 
up the text by removing all symbols. 
 
Task:  
Take a text that includes some random symbols and translate it into a text that has none of them. The resulting 
text should only include letters and numbers. 
 
Input Format:  
A string with random symbols. 
 
Output Format:  
A string of the text with all the symbols removed. 
 
Sample Input:  
#l$e%ts go @an#d@@ g***et #l#unch$$$ 
 
Sample Output:  
lets go and get lunch
"""

import re
list=input()
pattern=r"[\w\s\d]"
x=re.findall(pattern, list)
print("".join(x))
