#include <iostream>
#define int long long
using namespace std;

int n, v;
int c[100];

signed main() {
	int i;
	int ans = 0;
	int sumC = 0;
		
	cin >> n >> v;
	for (i = 0; i < n; i++) cin >> c[i];
	for (i = 0; i < n; i++) sumC += c[i];
	v -= n;
	ans += sumC;
	if (v <= 0) { cout << ans << endl; return 0; }
	
	int minC = 1145141919;
	int pos = -1;
	for (i = 0; i < n; i++) {
		if (minC > c[i]) {
			minC = c[i];
			pos = i;
		}
	}

	int syo = v / (pos + 1);
	int mod = v % (pos + 1);
	
	for (i = 0; i < mod; i++) {
		ans += (syo + 1) * c[i];
	}
	for (i = mod; i <= pos; i++) {
		ans += syo * c[i];
	}
	
	cout << ans << endl;
	return 0;
}