import java.util.Scanner;
public class Main{
public static void main (String[] args) {
Scanner obj = new Scanner(System.in);
int limit = 1;
while(limit != 2){
if(limit == 1){
int counter = 0;
float sum = 0;
while(counter != 2){
float num = obj.nextFloat();
if(num >= 0.0 && num <= 10.0){
counter++;
sum += num;
}else{
System.out.println("nota invalida");
}
}
System.out.format("media = %.2f\n", (sum/counter));
}
System.out.println("novo calculo (1-sim 2-nao)");
limit = obj.nextInt();
}
}
}