#include <bits/stdc++.h>
#ifdef LOCAL
#include "./debug.cpp"
#else
#define debug(...)
#define print_line
#endif
using namespace std;
using ll = long long;

int main() {
    int N, X, Y;
    cin >> N >> X >> Y;
    int Z = X + Y;

    vector<int> P(N), C(N);
    for (int i = 0; i < N; i++) {
        char c;
        cin >> P[i] >> c;
        C[i] = c == 'B';
    }

    vector<vector<ll>> profit(Z, vector<ll>(2));
    for (int i = 0; i < N; i++) profit[i % Z][C[i]] += P[i];
    debug(profit);

    vector<pair<ll, int>> v;
    for (int i = 0; i < Z; i++) v.push_back(make_pair(profit[i][0] - profit[i][1], i));
    sort(v.rbegin(), v.rend());
    debug(v);

    ll ans = 0;
    for (int i = 0; i < X; i++) {
        int idx = v[i].second;
        ans += profit[idx][0];
    }
    for (int i = X; i < Z; i++) {
        int idx = v[i].second;
        ans += profit[idx][1];
    }

    cout << ans << endl;
}