Instructions: 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: Hey. 
Speaker 2: Hi. Mom. Dad. 
Speaker 3: Sweetheart. Oh sorry were late, my fault, I insisted on riding the tube. 
Speaker 4: Judy, the kids.. 
Speaker 3: Jack, that's what they call the subway. 
Speaker 4: Ohh, I thought that you.... 
Speaker 2, 
Speaker 1: Dad, dad. We got it!! We Got It!!!
Output:
3