using static System.Math;
using System.Collections.Generic;
using System.Linq;
using System;

public class Hello
{
    static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        var n = int.Parse(line[0]);
        var k = int.Parse(line[1]);
        var x = int.Parse(line[2]);
        line = Console.ReadLine().Trim().Split(' ');
        var a = Array.ConvertAll(line, int.Parse);
        getAns(n, k, x, a);
    }
    static void getAns(int n, int k, int x, int[] a)
    {
        var dp = new long[n, 2];
        for (int i = 0; i < n; i++)
            for (int j = 0; j < 2; j++) dp[i, j] = long.MaxValue;
        dp[0, 0] = a[0];
        dp[0, 1] = k + x;
        for (int i = 0; i < n - 1; i++)
        {
            var w = Min(dp[i, 0] + a[i + 1], dp[i, 1] + a[i + 1]);
            dp[i + 1, 0] = Min(dp[i + 1, 0], w);
            var w2 = Min(dp[i, 0] + k + x, dp[i, 1] + k);
            dp[i + 1, 1] = Min(dp[i + 1, 1], w2);
        }
        Console.WriteLine(Min(dp[n - 1, 0], dp[n - 1, 1]));
    }
}