- #include <algorithm> 
- #include <iostream> 
- #include <iterator> 
- #include <string> 
-   
- using namespace std; 
-   
- int main() { 
- 	vector<string> words; 
- 	copy(istream_iterator<string>{cin}, istream_iterator<string>{}, back_inserter(words)); 
- 	copy(begin(words), end(words), ostream_iterator<string>{cout, ", "}); 
- 	cout << endl; 
- } 
-   
				I2luY2x1ZGUgPGFsZ29yaXRobT4KI2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8aXRlcmF0b3I+CiNpbmNsdWRlIDxzdHJpbmc+Cgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7Cgl2ZWN0b3I8c3RyaW5nPiB3b3JkczsKCWNvcHkoaXN0cmVhbV9pdGVyYXRvcjxzdHJpbmc+e2Npbn0sIGlzdHJlYW1faXRlcmF0b3I8c3RyaW5nPnt9LCBiYWNrX2luc2VydGVyKHdvcmRzKSk7Cgljb3B5KGJlZ2luKHdvcmRzKSwgZW5kKHdvcmRzKSwgb3N0cmVhbV9pdGVyYXRvcjxzdHJpbmc+e2NvdXQsICIsICJ9KTsKCWNvdXQgPDwgZW5kbDsKfQo=
				
				
				
				
				
			 
			
				
			
			
				
	
		
		
	
	
		these, are, some, words, and, some, more, words, apple, orange, pear, string, this, is, a, sentence,