#include <stdio.h>

int main () {
  int n = 0;
  long long k = 0LL;
  long long x = 0LL;
  long long a = 0LL;
  
  int res = 0;
  
  long long dp[2] = {};
  
  res = scanf("%d", &n);
  res = scanf("%lld", &k);
  res = scanf("%lld", &x);
  res = scanf("%lld", &a);
  
  dp[0] = a;
  dp[1] = k+x;
  for (int i = 1; i < n; i++) {
    long long nxt[2] = {};
    res = scanf("%lld", &a);
    nxt[0] = dp[0]+a;
    nxt[1] = dp[1]+k;
    if (dp[1]+a < nxt[0]) {
      nxt[0] = dp[1]+a;
    }
    if (dp[0]+k+x < nxt[1]) {
      nxt[1] = dp[0]+k+x;
    }
    dp[0] = nxt[0];
    dp[1] = nxt[1];
  }
  
  if (dp[0] < dp[1]) {
    printf("%lld\n", dp[0]);
  } else {
    printf("%lld\n", dp[1]);
  }
  
  return 0;
}