source_code: import java.io.*;
  import java.util.*;
  public class GFG {
  	public static void main (String[] args) {
  	    Scanner sc = new Scanner (System.in);
  	    int n = sc.nextInt();
  	    int a = sc.nextInt();
  	    int b = sc.nextInt();
  	    int c = sc.nextInt();
  	    int ans = 0;
  	    int t= sc.nextInt();
  	    int arr[] = new int[n];
  	    for(int i=0;i<n;i++){
  	        int nn = sc.nextInt();
  	        ans+=a;
  	        if(b<c){
  	            ans += (t-nn) * (c - b);
  	        }
  	    }
  	    System.out.println(ans);
  	}
  }