import sys
from collections import deque, Counter
sys.setrecursionlimit(5 * 10 ** 5)
from pypyjit import set_param
set_param('max_unroll_recursion=-1')
input = lambda: sys.stdin.readline().rstrip()
ii = lambda: int(input())
mi = lambda: map(int, input().split())
li = lambda: list(mi())
inf = 2 ** 63 - 1
mod = 998244353
n, k, x = mi()

a = li()

dp = [0, inf]


for v in a:
    e = [0,0]
    e[0] = min(dp[0] + v, dp[1] + v)
    e[1] = min(dp[0] + k + x, dp[1] + k)
    dp = e
print(min(dp))