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- from re import *
- inp=open("search.in","r")
- out=open("search.out","w")
- rexp=compile("(?<!@)"+sub(" ","(\s)+",inp.readline())[0:-1],flags=IGNORECASE)
- repl=lambda s:"@"+s.group(0)
- S="".join(inp.readlines())
- while(search(rexp,S)!=None):
- S=sub(rexp,repl,S,1)
- out.write(S)
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