#include<bits/stdc++.h>
using namespace std;
int main(){
    int k,a,b,c;
    cin>>k>>a>>b>>c;
    int f[1000];
    int cnt=0;
    for(int i=1;i<=k;i++){
        cin>>f[i];
        if(f[i]<=10){
            cnt=cnt+10*a;
        }
        else if(f[i]>10 && f[i]<=100){
            cnt=cnt+10*a+(f[i]-10)*b;
        }
        else if(f[i]>100){
            cnt=cnt+10*a+90*b+(f[i]-100)*c;
        }
    }
    cout<<cnt;
    return 0;
}