#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<ll, ll>;
#define rep(i, a, b) for(ll i = a; i < b; ++i)
#define rrep(i, a, b) for(ll i = a; i >= b; --i)
constexpr ll inf = 4e18;
struct SetupIO {
    SetupIO() {
        ios::sync_with_stdio(0);
        cin.tie(0);
        cout << fixed << setprecision(30);
    }
} setup_io;
int main(void) {
    ll n, x, y;
    cin >> n >> x >> y;
    vector<ll> p(n);
    vector<char> c(n);
    rep(i, 0, n) {
        cin >> p[i] >> c[i];
    }
    ll z = x + y;
    vector<ll> a(z), b(z);
    rep(i, 0, n) {
        if(c[i] == 'A') {
            a[i % z] += p[i];
        } else {
            b[i % z] += p[i];
        }
    }
    vector<ll> idx(z);
    rep(i, 0, z) idx[i] = i;
    auto comp = [&](ll x, ll y) -> bool {
        return (a[x] - b[x]) < (a[y] - b[y]);
    };
    sort(idx.begin(), idx.end(), comp);
    ll ans = 0;
    rep(i, 0, y) {
        ans += b[idx[i]];
    }
    rep(i, y, x + y) {
        ans += a[idx[i]];
    }
    cout << ans << '\n';
}