#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    int n, k, x;
    cin >> n >> k >> x;

    array<ll, 2> dp = { 0, 1LL << 60 };
    for (int i = 0; i < n; i++) {
        int a;
        cin >> a;

        auto p = dp;
        dp[0] = min(p[0], p[1]) + a;
        dp[1] = min(p[0] + x, p[1]) + k;
    }
    cout << min(dp[0], dp[1]) << endl;

    return 0;
}