#include <iostream>
using namespace std;
int x,n,a[11];
int main()
{
    cin >> x >> n;
    int sum=0;
    for(int i=1;i<=n;i++)
    {
        cin >> a[i];
        sum+=a[i];
    }
    cout << sum*x;
}

for (int i=1;i<=n;i++)
    {
        cin>>y;
        ans+=y;
    }
    cout<<ans*x;

#include <bits/stdc++.h>
using namespace std;
int x,ans,n,d;
int main(){
    cin>>x>>n;
    for (int i=1;i<=n;i++){
        cin>>d;
        ans+=d;
    }
    cout<<ans*x;
    return 0;
}