Given the task definition, example input & output, solve the new input case.
You are given a dialog between 2 or more individuals. You need to generate the number of the speaker (e.g. 1 for Speaker 1) who had the most lines in the dialog. If there is a tie, output the answer '0'.
Example: Speaker 1: What do you think we should do for our 10th wedding anniversary? 
Speaker 2: Hm, how about we take a vacation? Somewhere sandy and warm. 
Speaker 1: Well, if we're going to go out of the country, you need to be sure to renew your passport. It expired over a year ago! 
Speaker 2: How about we get something expensive instead of travelling.  We could get a new car. 
Speaker 1:  Is this your way of telling me that you want me to buy you a car?
Output: 1
In this dialog, there are 5 lines of speech.  Three of them belong to Speaker 1 and two of them belong to Speaker 2.  Therefore, Speaker 1 has the most lines in the dialog.

New input case for you: Speaker 1: Hey! 
Speaker 2: Hey! 
Speaker 1: So we thought we'd throw you little going away party around seven. 
Speaker 3: Oh, that sounds good! 
Speaker 4: Hey, Rach, you're leaving tomorrow, shouldn't you be packing? 
Speaker 3: It's all done! 
Speaker 4: Oh, yeah, right! And after I took a shower this morning I just threw my towel on the floor! Oh God, it hurts to even joke about it. 
Speaker 3: I know... Honey, seriously, I did it all. The luggage that I'm taking is in the bedroom, this is Emma's Paris stuff, these are the boxes that I'm having shipped, and that's the sandwich that I made for the plane... 
Speaker 4: Ok, so you've done some good work! What about your carry-ons? 
Speaker 3: Oh, well. Everything that I need is in here and my travel documents are on the counter organized in the order that I will be needing them. 
Speaker 4: Oh my God! I have nothing left to teach you!
Output:
3