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def add_len(string):
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std::string add_len(std::string sub, std::string buf = "")
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	result = ''
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{
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	for w in split(string, ' '):
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	return "" + ( std::getline(sub, buf) ? buf + " " + std::stoi(buf.size()) + add_len(sub) : "" );	
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		result += w + ' ' + to_string( len(w) )
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}