class kadai1
{
public static void main(String args[]) throws IOException
{

System.out.print("学生の数：");
BufferedReader br =
new BufferedReader(new InputStreamReader(System.in));
String str1 = br.readLine();

int num = Integer.parseInt(str1);

int rum;
int sum=0;

for(int i=1; i<=num; i++){
System.out.print("#"+i+":");
String str2 = br.readLine();
rum = Integer.parseInt(str2);
sum+=rum;
}
System.out.print("平均点:"+sum/num);
}
}