#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pll pair<ll, ll>
#define pii pair<int, int>
#define fs first
#define sc second
#define pb push_back
void solve() {
    int n;
    cin>>n;
    ll a[n+1];
    for(int i=1;i<=n;i++)cin>>a[i];
    cout<<a[1]*n<<'\n';
}
int main() {
    #ifdef FPO
        freopen("in","r",stdin);
        freopen("out","w",stdout);
    #endif
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    solve();
}
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