N, K, X = map(int, input().split())
A = list(map(int, input().split()))
inf = 10 ** 18
dp0 = [inf] * (N + 1)
dp1 = [inf] * (N + 1)
dp0[0] = 0
for i in range(N):
    dp0[i + 1] = min(dp0[i + 1], dp0[i] + A[i])
    dp1[i + 1] = min(dp1[i + 1], dp0[i] + K + X)
    dp0[i + 1] = min(dp0[i + 1], dp1[i] + A[i])
    dp1[i + 1] = min(dp1[i + 1], dp1[i] + K)
print(min(dp0[-1], dp1[-1]))