package main

import . "fmt"
import . "os"
import bf "bufio"

func main() {
	rd:=bf.NewReader(Stdin)
	var n,k,x int
	Fscan(rd,&n,&k,&x)
	dp0, dp1 := 0, x
	for i := 0; i < n; i++ {
		var a int
		Fscan(rd,&a)
		dp0, dp1 = min(dp0,dp1)+a, min(dp1,dp0+x)+k
	}
	ans := min(dp0, dp1)
	Println(ans)
}