#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, x, y;
  cin >> n >> x >> y;
  vector<P> d(n);
  rep(i, n) {
    int p;
    char c;
    cin >> p >> c;
    d[i] = P(p, c == 'A');
  }
  int period = x + y;
  VL diff;
  ll ans = 0;
  rep(s, period) {
    if (s >= n) break;
    ll ca = 0, cb = 0;
    for (int i = s; i < n; i += period) {
      (d[i].second ? ca : cb) += d[i].first;
    }
    ans += ca;
    diff.emplace_back(cb - ca);
  }
  sort(rall(diff));
  rep(i, y) ans += diff[i];
  cout << ans << '\n';
}