#include <string.h>

#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cfloat>
#include <climits>
#include <cmath>
#include <complex>
#include <ctime>
#include <deque>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <list>
#include <map>
#include <memory>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int N, X, Y;
    cin >> N >> X >> Y;
    vector<pair<long long, long long>> tmp(X + Y);
    for (int i = 0; i < N; i++) {
        int P;
        char c;
        cin >> P >> c;
        if (c == 'A') {
            tmp[i % (X + Y)].first += P;
        } else {
            tmp[i % (X + Y)].second += P;
        }
    }
    long long ans = 0;
    vector<long long> res;
    for (int i = 0; i < X + Y; i++) {
        ans += tmp[i].first;
        res.push_back(tmp[i].second - tmp[i].first);
    }
    sort(res.rbegin(), res.rend());
    for (int i = 0; i < Y; i++) {
        ans += res[i];
    }
    cout << ans << "\n";
}