#include<bits/stdc++.h>
using namespace std;

void solve()
{
	long long  n, c1, c2;
	cin >> n >> c1 >> c2;
	long long  ans = 0;
	for(int i = 0; i < n; i ++)
	{
		string t;
		cin >> t;
		long long cost = 0x3f3f3f3f;
		if(t[0] == t[1] || t[1] == t[2] || t[0] == t[2])
		{
			cost = min(cost, c1 + c2);
		}
		cost = min(cost, 3 * c1);
		cost = min(cost, 3 * c2);
		ans += cost;
	}
	
	cout << ans << endl;
}


int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	solve();
	return 0;
}