Definition: 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'.
Input: Speaker 1: Hi! Okay, Monica, Rachel, this is my friend Roger.
Speaker 2: Hey everybody.
Speaker 3: Hi Roger.
Speaker 1: So umm, I'm gonna get us some drinks. Would you help me out?
Speaker 4: Yeah.
Output:
1