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
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