import java.util.Scanner; public class Main { public static void main(String [] args){ Scanner sc = new Scanner(System.in); while(sc.hasNext()){ int n = sc.nextInt(); if(n <1 || n> 200){ continue; } int [] num = new int [n]; for(int i = 0; i <num.length; i ++){ num [i] = sc.nextInt(); } int x = sc.nextInt(); int j = 0; for(; j <num.length; j ++){ if(x == num [j]){ System.out.print(j); break; } } if(j == num.length){ System.out.print(“ - 1”); } } } }