#include <iostream>
using namespace std;
int main()
{
int n;
float a[100], mA, S=0;
cin >> n;
for (int i=0; i<n; i++)
{
cin >> a[i];
S += a[i];
}
mA = S/n;
for (int i=n-1; i>=n/2; i--) a[i+1] = a[i];
a[n/2]=mA;
for (int i=0; i<n+1; i++) cout << a[i] << " ";
return 0;
}