import java.util.Scanner; class Exer4 { public static void main(String[] args) { Scanner in = new Scanner (System.in); int alunos = in.nextInt(); int notas[] = new int[alunos]; int soma = 0; for (int i = 0; i < alunos; i++) { notas[i] = in.nextInt(); soma += notas[i]; } System.out.println(soma / alunos); } } //https://pt.stackoverflow.com/q/411367/101