#include <iostream>
#include<vector>
using namespace std;
vector<int>a;//create a vector
int main()
{
    int n=10,temp;
    for(int i=0;i<n;i++)
    {
        cin>>temp;
        a.push_back(temp);//insert the element to the last position in the vector
    }
    int mean=0;
    for(int i=0;i<n;i++)
    {
        cout<<"Element "<<i<<":"<<a[i]<<endl;
        mean+=a[i];//you can access the elements as you do in an array
    }
    cout<<"mean:"<<mean/10<<endl;
    a.clear();//clear the vector
    a.push_back(10);
    cout<<a[0]<<endl;
	return 0;
}

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