#include <bits/stdc++.h>
using namespace std;
#define int long long
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define pb push_back
#define all(a) a.begin(), a.end()
#define endl "\n"
void printVector(vector<int> a){
	for (auto x: a) cout << x << " ";
	cout << endl;
}
void solve(){
	int n; cin >> n;
	vector<int> a(n);
	FOR(i,0,n) cin >> a[i];
	cout << a[0]*n << endl;
}
int32_t main(){
	ios::sync_with_stdio(false);cin.tie(nullptr);
	int t = 1; // cin >> t;
	while (t--) solve();
}
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