import java.io.*; import java.util.*; import java.text.*; import java.math.*; import java.util.regex.*; public class Solution { public static void main(String[] args) { Scanner in = new Scanner(System.in); int n = in.nextInt(); ArrayList a=new ArrayList(); for(int i=0;i=0;i--) { if(a.get(i).equals(a.get(n-1))) count++; else break; } System.out.println(count); } }