using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static long[] NList => ReadLine().Split().Select(long.Parse).ToArray();
    static string[] SList(long n) => Enumerable.Repeat(0, (int)n).Select(_ => ReadLine()).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var c = NList;
        var (n, x, y) = (c[0], c[1], c[2]);
        var query = SList(n);
        var arr = new Pair[x + y];
        for (var i = 0; i < n; ++i)
        {
            var s = query[i].Split();
            var p = int.Parse(s[0]);
            if (s[1] == "A") arr[i % (x + y)].A += p;
            else arr[i % (x + y)].B += p;
        }
        Array.Sort(arr, (l, r) => (l.B - l.A).CompareTo(r.B - r.A));
        var ans = 0L;
        for (var i = 0; i < x; ++i) ans += arr[i].A;
        for (var i = x; i < arr.Length; ++i) ans += arr[i].B;
        WriteLine(ans);
    }
    struct Pair
    {
        public long A;
        public long B;
    }
}