include <bits/stdc++.h>

using namespace std; int z[1000000];

int main() {

int k, a, b, c;
int num = 0;
cin >> k >> a >> b >> c;
for (int i = 0; i < k; i++) {
	cin >> z[i];
	if (z[i] <= 10) {
		num = num + z[i] * a;
	}
	if (z[i] > 10 && z[i] <= 100) {
		num = num + 10 * a + (z[i] - 10) * b;
	}
	if (z[i] > 100) {
		num = num + 10 * a + 90 * b + (z[i] - 100) * c;
	}
}
cout << num;
return 0;

}