// editor5
#include<stdio.h>
int main()
{
    int n,arr[20],i;
    float total=0,sum;
    scanf("%d",&n);
    for(i=0;i<n;i++)
    {
        scanf("%d",&arr[i]);
        total+=arr[i];
    }
    sum=total/n;
    printf("%d",sum)
    return 0;
}